360° panorama by Ken Stahley.
Click the image to open the interactive version.

Neat Coulee drains into the Missouri River near the Eagle Creek Campground. Neat Coulee is a short, heavily eroded, small slot canyon. In this panorama the canyon has narrowed but is still not a slot canyon. The White Cliffs of sandstone are soft and erode easily. At this location in Neat Coulee an arch has formed high in a cliff while next to it the end of the cliff has eroded to form a large, lone hoodoo.

http://www.360cities.net/image/arch-and-hoodoo-in-neat-coulee-missouri-river-montana