With winter approaching, food and shelter are critical for the thousands gathered on the North Dakota prairie trying to stop the Dakota Access pipeline.
The Oceti Sakowin (Seven Fires) Camp near the Standing Rock Sioux Reservation has a main mess hall, but small kitchens have sprung up around the camp.
Winona Kasto runs Winona's Kitchen, housed in a small makeshift tent. Kasto, a member of the Cheyenne River Sioux tribe in South Dakota, does much of the cooking outdoors over a wood fire. She makes soup or stew every day in a 50 gallon pot over the fire, serving more than 400 people a day.
Volunteers and donated supplies keep the kitchen running, but Winona is its the heart and soul.