This formation is in the Door Trail area and shows clearly the fact that the Badlands will eventually melt away. The bentonite is clay and it does erode. There are some layers of rock but, the formations are mainly clay.
As the snow started to melt, the overlooks that weren't paved got very sticky and slick. I tried to avoid those.
Badlands National Park
South Dakota, USA
I'll be busy the next few weeks. Commenting will be spotty at best.