We went at night and saw the dismalites on a guided tour. These are small worms or larvae that glow in the dark. We went back in the morning and walked the trail down the canyon. It is about a mile long and involves going over a few rocks and roots, but is not too difficult. My wife and I are in our 70's and did alright, but we are in relatively good condition. One complaint we had was that there were few markings on the trail to compare wth the map we were given. Admission is reasonable, and prices are given on their website. The canyon has high rock outcroppings and huge boulders. Good for nature lovers with only the store and a few cabins and campsites at the entrance to detract from the natural canyon.