Or fingers?
Sausges?
Complex and interesting geology.
Basis scoop is lots of igneous activity in past; thus the coal and in between, intact sandstone sediments with plentiful leaf fossils from the dense jungles 66 - 55 million years ago from the dino age to after the KT extinction.
But no vertebrates until up Glendive way; which would be illegal to disturb anyway but ... drat.