Extensive bank erosion since the 2011 flood has seriously impacted an important state historical site managed by our agency (blog.statemuseum.nd.gov/blog/saving-double-ditch). After a long process to determine possible alternatives for funding and a stabilization plan, we’re relieved to have the engineering work begin.

Situated on the east bank of the Missouri River nine miles north of Bismarck, Double Ditch Indian Village State Historic Site is one of the best preserved examples of an earthlodge village on the northern plains. The site was a regional trading center occupied for nearly 300 years (AD 1490-1785) by the Mandan people. At its peak the population of Double Ditch has been estimated to have been 2,000 or more people, with a richly developed culture based upon agriculture and seasonal bison hunting. Due to its archaeological significance, the site is listed on the National Register of Historic Places.

Bank Erosion at Double Ditch Indian Village State Historic Site, October 2016. Photo courtesy Tim Reed, SHSND.

The Missouri River is powerful, perhaps never more so than when it’s in flood stage. This stretch of the river lies between the Garrison and Oahe reservoirs. Those living along the Missouri know this firsthand, as we’ve seen rising floodwaters on more than one occasion impact lives, property, and cultural and natural resources.

Double Ditch Indian Village State Historic Site was unable to escape the effects of the Missouri River’s catastrophic flooding in 2011. Large sections of the river terrace edge shifted in a process called rotational erosion. Rotational erosion simply means that large blocks of sediment at the site were rotating and shifting as slumping occurred along the river bank. This erosional process destabilized the bank and threatened a portion of the site, including parts of the public walkway/bicycle path.

Geotechnical coring rig operating on rotational erosion area at Double Ditch Indian Village State Historic Site, October 2015. Photo courtesy Tim Reed, SHSND.

To make matters even worse, the active erosion at Double Ditch has continued in an area known to contain human burials. Since 2013, 18 burials have been disinterred at the site as a result of this erosion. Because Double Ditch village was occupied for 300 years by thousands of people, more burials would be disturbed if erosion continued.

During the 2015 Legislative session, the State Historical Society of North Dakota partnered with the Mandan, Hidatsa, and Arikara Nation to raise awareness about the immediate threat posed to Double Ditch by erosion. Project funding was allocated during the 2015 legislative session to stabilize the site.

Geotechnical coring rig operating on rotational erosion area at Double Ditch Indian Village State Historic Site , October 2015. Photo courtesy Tim Reed, SHSND.

A geotechnical study performed in October 2015 confirmed that the erosion was a result of the 2011 flood. The study further determined that the existing threat to the site was even more extensive than originally thought. A new crack was developing below the surface, with the potential to progress 400 feet into the heart of Double Ditch Village. Left unaddressed, this newly identified erosional fault could be catastrophic, causing twelve acres (half of the site) to be lost.

Geotechnical coring rig operating at Double Ditch Indian Village State Historic Site, October 2015. Photo courtesy Tim Reed, SHSND.

A geomorphological trench being excavated at Double Ditch Indian Village State Historic Site as part of the geotechnical study, October 2015. Photo courtesy Tim Reed, SHSND.

As the engineering plan was being developed in 2016, the project faced delays from a challenging permitting process. Thanks to the North Dakota Legislative Assembly, project funding not able to be used during the last legislative session was carried over into this biennium. We’re also grateful to tribal members from the Mandan, Hidatsa, and Arikara Nation and other groups and individuals who supported efforts to keep this critical project moving forward.

Double Ditch Indian Village State Historic Site bank stabilization diagram, March 2017. SHSND.

Various geotechnical studies and modeling were critical in developing plans for the bank stabilization. Ultimately the plan involved reshaping the bank by removing weight from the upslope and adding weight to the toe. The rock key/trench and pipe piles will provide mass and strength to stabilize the slope.

The riverbank will be revegetated with a variety of native grasses, forbs, shrubs, and trees. Interpretive signs will be installed along the bank highlighting natural resources. The stabilized and reshaped bank will protect the Mandan village and enhance fishing access to the river, bird/wildlife watching, and provide a non-motorized landing for kayaks and canoes. In addition, this will prove a safe walking/bicycle trail.

Construction fence at Double Ditch Indian Village State Historic Site, June 2017. Photo courtesy Tim Reed, SHSND.

As of the date of this blog, the bank stabilization at Double Ditch Indian Village State Historic Site is anticipated to begin in late June. Construction should be completed in about five months. We’ll keep readers informed in this blog as the project progresses.

 

*Fern Swenson, Director of Archaeology and Historic Preservation, and Kim Jondahl, Director of Communications and Education, were contributing authors to this post.

Advocates of Save Double Ditch, a grassroots organization, brave the cold in March 2017 to voice their support for bank stabilization funding. March- 2017. Courtesy Tom Stromme, Bismarck Tribune

One of my favorite heritage tourism programs is coming up very soon: Heritage Outbound! The Heritage Outbound Winter Adventure, an annual day of activities and learning at Fort Clark State Historic Site, will be on February 11, 2017. I’ve been fortunate to be involved with this outreach program for nearly 15 years, and it’s always been a great experience!

Allen Demaray plays traditional flute music in the earthlodge at Knife River Indian Villages National Historic Site during the 2016 Heritage Outbound Winter Adventure. Image courtesy of Brooke Morgan.

We help participants focus on the history and culture of the Mandan, Hidatsa and Arikara peoples at the confluence of the Knife and Missouri rivers. The State Historical Society of North Dakota has once again partnered for this year’s event with the Knife River Indian Villages National Historic Site, the Mandan, Hidatsa, and Arikara Nation, the Knife River Indian Heritage Foundation, and the North Dakota Archaeological Association.

It’s been fun to watch the Heritage Outbound program evolve over the years. The program got its start in the period leading up to the Lewis & Clark Bicentennial of 2004-2006 (remember those two guys?), with Heritage Outbound starting as a multi-day affair offered during the winter and summer seasons. The winter program introduced participants to seasonal activities like snowshoeing and winter camping in below-freezing weather. My friend, Calvin, had remembered to bring a bison hide to keep warm the one year when we winter-camped at the historic Lower Hidatsa earthlodge village, but I had to make do with two sleeping bags! The Heritage Outbound summer program focused on the Missouri River as a transportation corridor, and we put the participants into expedition canoes. We camped overnight in a wonderful camp by the river, holding educational programs and sharing traditional stories under the summer stars.

State Historical Society of North Dakota Curator of Education Erik Holland points out the locations of Fort Clark fur trade post and Mih-Tutta-Hang-Kush earthlodge village to Heritage Outbound participants – February 2016. Image courtesy of Doug Wurtz.

This year’s adventure will begin with a morning snowshoe hike at Fort Clark State Historic Site. The site is the location of the historic Mandan earthlodge village of Mih-Tutta-Hang-Kush .  The village was later occupied by the Arikara people, and an important fur-trade era post was established there during that time. During our site visit we’ll discuss archaeological investigations recently conducted at Fort Clark by the State Historical Society and the PaleoCultural Research Group.

Heritage Outbound participants enjoy a pleasant (snow-free) walk on the Two Rivers Trail near the Big Hidatsa earthlodge village in Knife River Indian Villages National Historic Site – February 2016. Image courtesy of Doug Wurtz.

After lunch, we’ll learn about the lifeways of the Hidatsa peoples. We’ll be hiking and learning as we explore the Lower Hidatsa and Sakakawea villages, two important earthlodge villages located in Knife River Indian Villages National Historic Site. Outdoor activities like fire-starting, using atlatls to throw darts (always a fun time) and other traditional winter games keep the afternoon lively and fun. We’ll also be joined during this year’s activities by living history presenters Chris Floyd and Terry Madden of The American Mountain Men.

SHSND Curator of Education Erik Holland demonstrates flint and steel fire-starting during the 2016 Heritage Outbound Winter Adventure. Image courtesy of Brooke Morgan.

2016 Heritage Outbound Winter Adventure participant Brooke Morgan demonstrates the proper form used in atlatl dart throwing. Note the reconstructed earthlodge at Knife River Indian Villages National Historic Site visible in the background. Image courtesy of Doug Wurtz.

2016 Heritage Outbound Winter Adventure atlatl target practice. Image courtesy of Brooke Morgan.

The day-long program concludes with a traditional meal, story-telling, and songs around a warm fire in the recreated earthlodge at Knife River. We’ll be joined this year by the Baker-Demaray family of the Mandan, Hidatsa, Arikara Nation. The evening activities in the earthlodge are among my favorite. The warmth of shared experience and camaraderie among new friends around the fire in the earthlodge all make for a magical conclusion to a great day.

If you’re interested in registering for this year’s Heritage Outbound Winter Adventure on February 11, please register at heritageoutbound2017.eventbrite.com.

The Baker-Demaray family and Amy Mossett of the Mandan, Hidatsa, Arikara Nation gather in the Knife River Indian Villages National Historic Site visitor center at the conclusion of the 2016 Heritage Outbound Winter Adventure. Image courtesy of Brooke Morgan.

A fellow blogger recently wrote that a visit to one of North Dakota’s state historic sites is “a bit like traveling in time” (see https://blog.statemuseum.nd.gov/blog/time-traveling-historic-sites). As my friend wrote, “A visit can give me a better perspective on what is happening in my own time.” This statement is spot on, and I couldn’t agree more!

One of my ongoing interests in recent years has been the emerging field of aerial photography via Unmanned Aerial Vehicles. A “U.A.V.” (or “drone”) elevates the concept of gaining “a different perspective in our own time” a step further to include the bird’s-eye view! I’ve talked about my interest in aerial photography before, most recently in a blog on the use of this technology to monitor ongoing erosion threatening Double Ditch Indian Village State Historic Site (see http://blog.statemuseum.nd.gov/blog/an-eye-in-the-sky-for-preservation.)

Thus far I’ve used a U.A.V. to capture aerial imagery at five of the 56 state historic sites managed by the State Historical Society of North Dakota. I should mention that all flights were over property managed by the SHSND and were flown in observance of guidelines established by the Federal Aviation Administration. I’d like to use this space to share some of my favorite aerial images of these sites with you!

Aerial view of Menoken Indian Village State Historic Site – April 2015

Menoken Indian Village State Historic Site marks the location of a village dating to AD 1200-1220. The village contains approximately 30 earthlodge depressions, and was home to about 200 people. The village is surrounded by a defensive ditch and palisade, and is an excellent example of the period of transition from a hunting-gathering subsistence to a hunting and gardening way of life. Menoken Indian Village is on the National Register of Historic Places and is located 11 miles east of Bismarck.

Visit http://history.nd.gov/historicsites/menoken/index.html for more information on Menoken Village State Historic Site.

Aerial view of Huff Indian Village State Historic Site – August 2014

Huff Indian Village State Historic Site is an ancestral Mandan earthlodge village dating to approximately AD 1450. This large community consisted of more than 100 rectangular earthlodges and was surrounded by a fortification ditch and bastion. Huff village was home to about a thousand people two hundred years before Europeans first entered what is known today as North Dakota. The lodge depressions visible at the site were laid out in an organized plan, evidence of a high degree of social and political structure within the village. We know this village was only briefly occupied, perhaps about 50 years. Huff Village is listed on the National Register of Historic Places and is located 22 miles south of Mandan, North Dakota.

Visit http://history.nd.gov/historicsites/huff/index.html for more information on Huff Indian Village State Historic Site.

Aerial view of Double Ditch Indian Village State Historic Site – November 2013

Double Ditch Indian Village State Historic Site is the location of a Mandan village occupied from AD 1490 to 1785. The state of preservation of the site is amazing, with more than 100 lodge depressions, many large refuse piles (called middens), and two fortification ditches visible on the surface. Recent geophysical and archaeological investigations at Double Ditch have demonstrated that there are two additional fortification ditches buried at the site. The population of the site was about 2,000 people at its height (larger than many small towns in North Dakota today!) The population declined to about 400 people by 1780. Double Ditch was decimated by a smallpox epidemic that swept through much of North America in 1781-1782. Survivors of this epidemic moved up the Missouri River to consolidate with the neighboring Hidatsa people in the Knife River region. Double Ditch village is located eight miles north of Bismarck and is listed on the National Register of Historic Places.

Visit http://history.nd.gov/historicsites/doubleditch/index.html for more information on Double Ditch Indian Village State Historic Site.

Aerial view of Fort Clark Trading Post State Historic Site – February 2016

Fort Clark Trading Post State Historic Site is the location of a large earthlodge village and two early fur trade posts on the Missouri River. The Mandan people built a village named Mih-tutta-hang-kusch” in this location in 1822. The American Fur Company established two trading posts in the area soon after to trade with the Mandan villagers and other neighboring groups. The village suffered heavily during the smallpox epidemic of 1837, and the Mandan again moved further up the Missouri River. The neighboring Arikara people moved into the abandoned village soon after in 1838 and continued to trade with the post until moving further upriver themselves in 1862. The site features at Fort Clark Trading Post are exceptionally well-preserved, with approximately 100 lodge depressions visible. Many features of the nearby Fort Clark trading post are also well preserved. Fort Clark Trading Post State Historic Site is located between Washburn and Stanton, North Dakota in Mercer County. The site is listed on the National Register of Historic Places.

Visit http://history.nd.gov/historicsites/clark/index.html for more information on Fort Clark Trading Post State Historic Site.

Aerial view of Fort Rice State Historic Site

Fort Rice State Historic Site is a great example of a military post established during a period of turbulent culture conflict on the Upper Missouri River. Built in 1864, the fort was established by General Alfred Sully to guard expanding northern plains trade routes rapidly expanding into lands claimed by groups of Dakota and Lakota peoples. The fort was eventually abandoned in 1878 with the establishment of Fort Yates on the nearby Standing Rock Agency. Many site features at Fort Rice are clearly visible today. Although no standing structures are present, the foundation outlines of the blockhouses, defensive palisade, and many other buildings are easily recognizable. Fort Rice is located 30 miles south of Mandan, North Dakota.

Visit http://history.nd.gov/historicsites/rice/index.html for more information on Fort Rice State Historic Site.

Finally, we want to hear from YOU ! The State Historical Society of North Dakota is seeking feedback from the public about visiting North Dakota State Historic Sites and Museums. Please visit http://history.nd.gov/survey.html to share your thoughts and experiences with us. All responses are confidential, and greatly appreciated. Your feedback will help us build a better experience for the site visitor. The survey period closes August 21, 2016.

Now that you’ve seen these sites from the air, I invite you to do a little “time traveling” of your own and visit these sites, and the other 51 State Historic Sites located in North Dakota. Enjoy summer and keep flying high!

Recently, a fellow blogger touched upon the important role that partnerships play within the SHSND mission to “identify, preserve, interpret and promote the heritage of North Dakota and its people” (see http://blog.statemuseum.nd.gov/blog/partnering-people-oh-possibilities). The SHSND is indeed fortunate to have many partners in this mission. I’d like to further elaborate on the benefits of our partnerships in support of heritage tourism, educational outreach and archaeological research via a couple recent examples from the Knife River region.

Heritage Outbound participants at Mih-Tutta-Hang-Kush village at Fort Clark State Historic Site – February 2016. The circular earthlodge depressions are clearly visible in this aerial view.

The Heritage Outbound program is a heritage tourism and educational program I’ve been fortunate to be involved with now for several years. The program engages participants in a day-long educational experience focused on the history and culture of the Mandan, Hidatsa and Arikara peoples at Fort Clark State Historic Site and Knife River Indian Villages National Historic Site.

SHSND Education Curator Erik Holland points out the location of the former channel of the Missouri River to Heritage Outbound participants at Mih-Tutta-Hang-Kush village at Fort Clark State Historic Site – February 2016. Image courtesy of Doug Wurtz.

This program is a long-time favorite of mine. You just can’t beat spending a winter day talking about the archaeology, history, and natural history of the Knife River area with a group of people eager and excited to learn! This year’s program was held on February 20, and we had a great group of participants. The day included site visits and outdoor hikes at Fort Clark State Historic Site and Big Hidatsa Village within the Knife River Indian Villages National Historic Site. Both of these earthlodge village sites are wonderfully preserved and simply beautiful to visit.

National Park Service Ranger Jeff Carlson and archaeologist Timothy Reed of the SHSND speaking with Heritage Outbound participants about the community at Big Hidatsa village at Knife River Indian Villages National Historic Site – February 2016. Image courtesy of Doug Wurtz.

For more information on Fort Clark State Historic Site: http://history.nd.gov/historicsites/clark/index.html

For more information on Big Hidatsa Village: http://www.nps.gov/knri/learn/historyculture/hidatsa-village.htm

One of the highlights of the Heritage Outbound day is a fantastic traditional meal of roast bison, squash, corn, beans and fry bread, and a very special evening program of music and cultural exchange in the reconstructed earthlodge at Knife River. From the Mandan, Hidatsa, and Arikara Nation, we were fortunate to have Amy Mossett, Twyla Baker-Demaray, Allan Demaray, and the Demaray family with us this year for the sharing of oral history, traditional music, and song in the earthlodge.

Allan Demaray prepares to speak to Heritage Outbound participants in the reconstructed earthlodge at Knife River Indian Villages National Historic Site – February 2016. Image courtesy of Doug Wurtz.

The SHSND partnered for this year’s event with the Knife River Indian Villages National Historic Site, the Knife River Indian Heritage Foundation, the Mandan, Hidatsa, and Arikara Nation, and the North Dakota Archaeological Association. The Heritage Outbound program is just one example of how partnering with people can bring about cultural exchange and a celebration of the diverse history of North Dakota.

I’m happy to announce that many of the groups involved with the Heritage Outbound program will also be partnering for an upcoming event in May 2016 called “ArcheoBlitz.” Major partners include the Knife River Indian Villages National Historic Site, the Midwest Archeological Center, the Nueta Hidatsa Sahnish College, the Mandan, Hidatsa, and Arikara Nation, the State Historical Society of North Dakota, the Northern Plains Heritage Foundation, the PaleoCultural Research Group, the North Dakota Geographic Alliance and researchers from across the nation. The ArcheoBlitz event will take place May 5-7 at the Knife River Indian Villages National Historic Site, and celebrates both the National Park Service centennial and the Hidatsa history preserved at the park. The first two days will give 7^th and 8^th grade students the opportunity to conduct supervised archaeological field research. The final day is open to the public and will include Native performing arts groups and research presentations, with other events planned throughout the day.

Further information on the ArcheoBlitz event can be found at http://www.nps.gov/knri/index.htm.

The State Historical Society of North Dakota's (SHSND) mission is to identify, preserve, interpret and promote the heritage of North Dakota and its people. These four objectives frequently co-align at our state historic sites, as we’ll see in this discussion about aerial photography at Double Ditch Indian Village State Historic Site.

The SHSND’s Archaeology & Historic Preservation Division, (among many other responsibilities) manages the 56 state historic sites in the state. These sites interpret many different stories about the history of North Dakota, and the people who call it home. Thousands of people from all over the world enjoy visiting these sites each year. As a research archaeologist working for the SHSND, part of my job is to assist with the identification, interpretation, and preservation of these sites.

Double Ditch Indian Village State Historic Site photographed by SHSND quadcopter – November 2013

Double Ditch Village State Historic Site is located eight miles north of Bismarck. The site marks the location of a large earthlodge village inhabited by the Mandan people from the late 1400s to 1785, and is recognized as one of the best-preserved earthlodge villages on the Northern Plains. The site name refers to the presence of two fortification ditches visible on the site surface. We know through geophysical and archaeological investigations that there have actually been four fortification ditches over the course of the site’s occupation. Perhaps 2000 people lived there at its peak, making it larger than many small towns in the state of North Dakota today. On-site interpretation includes signs with information about the site from past and recent excavations. The site is open year-round, and thousands of people visit annually.

Archaeologists have used aerial photography for over 100 years to help us visualize and understand archaeological sites. Aerial images collected at the prehistoric monument of England’s Stonehenge in 1906 are recognized among the first uses of aerial photography to map and interpret an archaeological site. Many different technologies have been employed to capture aerial images since that time. Balloons and kites were some of the earliest platforms used to acquire the images, while fixed- and rotary-wing wing aircraft (helicopters) are most frequently used today. Some of the first examples of aerial images of archaeological sites in North Dakota were those acquired by the United States Department of Agriculture in 1938.

Double Ditch Indian Village State Historic Site photographed by U.S.D.A. – June 16, 1938

Double Ditch Indian Village State Historic Site photographed by U.S.D.A. National Agricultural Imagery Program – June 2014

The U.S.D.A. still makes regular flights across the country for agricultural purposes. The two images above illustrate modern developments made in the vicinity of Double Ditch, among them the relocation of State Highway 1804 to the east side of the site and the creation of a visitor parking loop. Many site features can be seen in this image, including multiple earthlodge depressions, the two fortification ditches visible on the surface, and many of the large midden mounds present.

The technology associated with aerial photography continues to evolve. We’ve used a variety of aerial platforms to capture images of Double Ditch over the years. Planes, kites, and powered parachutes (sometimes called “parafoils”) have been used in recent years with a variety of film, digital, and thermal cameras. In 2010, an aerial remote sensing technology called LIDAR was used to acquire detailed elevation data on the ground surface.

I’ve recently used an unmanned aerial vehicle (or quadcopter) to monitor and document ongoing erosion issues at the site. Our quadcopter is a GPS-enabled, remote controlled vehicle that uses a small digital camera for taking images and video. This technology has allowed us to see the extent of the erosion at Double Ditch from multiple angles, and in greater detail than ever before. These images have also enabled engineers to identify specific erosional forces affecting the site and to propose solutions to the problem. Flights of the SHSND quadcopter occur only over property managed by the SHSND, and always observe guidelines established by the Federal Aviation Administration (FAA) for the use of this technology.

SHSND quadcopter – 2014

Erosion at Double Ditch Indian Village State Historic Site photographed by SHSND quadcopter – May 2014

Erosion at Double Ditch Indian Village State Historic Site photographed by SHSND quadcopter – July 2014

The ongoing erosion at Double Ditch represents a significant threat to the site’s integrity, and North Dakota’s Governor has asked the State Legislature to address the issue in the 2015 legislative session. The aerial images captured with the quadcopter at Double Ditch will continue to provide documentable evidence of both the scale of this erosion, and the speed at which it is occurring.

Video of erosion at Double Ditch Indian Village State Historic Site – July 5, 2014