Saw the short hike around Devil's Tower mentioned a couple of times and it is worth the stop. I haven't seen it mentioned, so would add if you have time to slow down for a 4-5 hour hike in Custer Park I have done the hike to Harney Peak (now Black Elk Peak) several times and it is a great way to see the area. No technical climbing, just an enjoyable hike. Good trails and fun for the family.

https://harneypeakinfo.com/harney-peak-hiking/harney-peak-trail

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