I am in love with Custer State Park. It's like a national park that just is run by a state. It was made a State Forest in 1912 and much of the buildings, including the following (the visitor's center) were built by the CCC.
There are a lot of bison in the park and can be easily seen. This picture is not zoomed in at all. I took it out my window as we drove past.
They like to hold up traffic, too:
We saw a lot of other animals in the park, too. In addition to the animals I mentioned in the last post, I also saw pronghorn, mule deer, a beaver (I think), and a bat. Also in the park, though we didn't see any, are big-horn sheep, mountain goats, rattlesnakes, and mountain lions.
A very hard to see mule deer:
And, a hiding pronghorn:
We really enjoyed Custer State Park. It was a great place to camp, and there's a lot we didn't get to do. We just might go back sometime, notwithstanding the 6 hour drive. :)