Cheyenne River Indian Reservation
A Native American tribe had argued that an oil-filled pipeline would violate their freedom of religion.
The Dakota Access Pipeline is being installed now, after Trump signed an executive order last month.
A photographer recorded powerful scenes from the last confrontation at Oceti Sakowin camp.
Like a 1,170-mile pipeline.
WHAT'S HAPPENING
Native Americans who object to the project are still fighting it in court.