My brother went to it a few years ago. Only areas around the monuments and a few markers are mowed. At least according to the pics I saw. The battlefield too big to keep trimm d. I think having it as natural as possible brings it to life.
I was driving to Billings once, and saw a sign on the interstate - Battle of Little Big Horn. So I pulled off thinking that it would be a long way off, stopped shortly at a small store and asked them about it. “Oh, it just over there.” I was astonished. So I went to the battlefield, open prairie, very hilly, with lots of tombstones. The snowflakes were as big as golf balls, and the wind cut through my clothes like a knife. I stayed only minutes. Couldn’t help thinking, if only I had visited as a teenager.
Thank you, I will try for an early spring visit.