>>485083http://gfp.sd.gov/state-parks/directory/custer/trails/hiking-biking.aspxHeres a good idea for trails.
Note that Cathedral Park is red. That one is breathtaking though. The Prairie trail is fucking awesome for nature. Scary as fuck though if you come across a Bison or a heard.
(Pic is from when I was sleeping in my vehicle in the Badlands btw)