Beautiful amazing hike! Even saw a wild Bison! Hike was more on the moderate side imo but because of the heat I highly recommend you bring a liter of water per person. Main downfall is the trail can be difficult to follow, so make sure you have the offline maps downloaded. Lastly if you're looking to visit the fern cave and doing this trail clockwise, ignore the first "fern cave .2 mi" sign you see, this sign is wrong. Just continue along with the loop and you'll eventually run into another "fern cave" sign that'll point you towards a 100ft spur to the cave.