We spent a week there with 2 other couples - and there its TONS to do! The scenery is awesome in the park (Custer State Park), biking, canoeing if you are into that, gambling in Deadwood, Needles Hwy, wildlife, ATVs, Rushmore (the heads
). A cute little train museum in Hill City. I'm anxious to go back! I even got my big butt stuffed through the tunnel
I've done Crazy Horse 20 years ago, and its the same so I've never gone back.