Harney Peak- a longer hike, located in Custer State Park.
Deer Field
There’s tons to explore, especially if you drive out Nemo Rd. area
Biking:
Mickelson Trail
Schroeder Rd- mountain biking trails
Boating/Fishing:
Pactola- the most beautiful drive out in the hills
Sylvan Lake in Custer State Park
Horsetheif Lake
Canyon Lake
I know that’s kinda lame, but really, the camping spots are phenomenal.
Black Hills Caverns-
I worked here for about 2 weeks, until I had to quit due to a broken back injury
Jewel Cave
Wind Cave
There’s tons of opportunity! deer, elk, pheasant, duck, etc.
Here’s my other posts related to travel and fun in the Black Hills:
Things to do on your South Dakota Road Trip
10 FREE Things to do in Rapid City, SD
Seasonal Things to do in the Black Hills
Places to eat in the Black Hills