At approximately 1:00 am, a fire began in the prairie to the west of the Seven Councils camp on the west side of Hwy 1806.  Mandan Rural FD was dispatched at 1:12 am.  Due to the location of the fire, the fire departments experienced difficulty with access.  The fire was spreading to the west, and was not endangering the protest camps.  At approximately 8:30 am, a NDNG helicopter arrived to assist with extinguishing the fire.  The fire was basically extinguished at approximately 9:50 am.