At 9:20 am, vehicles began to leave the camps heading towards Bismarck/Mandan. The caravan stopped on Hwy10 west of Mandan by the Precision Pipeline facility. They parked along the Hwy. and then proceeded to block the BNSF tracks, first with a vehicle, and then with tree branches and other debris. LE formed a line and started to make arrests when the 300 protesters did not leave the area as instructed. Later in the day about 100 protesters marched from the area of UTTC, to the offices of the Corp of Engineers on S 12th Street in Bismarck.There were 25 arrested at the protest scene in Mandan; none arrested at the Bismarck protest event.