Spent yesterday at Warren Dunes State Park in Sawyer, Michigan:
It has the highest natural (as opposed to perched*) sand dune in the state (a state surrounded by four of the five Great Lakes, so there are a lot of dunes): 260 feet. The path to get to the highest point has two approaches, both basically straight up. The sand is like ooblek to walk/climb in.
*The cheater’s way to get higher: Perched dunes
