I signed up for the moderate hike, and I highly recommend it. It was a wonderful experience - the Valley of Fire is absolutely beautiful & the definite highlight of my trip to Vegas. My tour was led by Nick, and I turned out to be the only person registered for that time slot. Nick was the ideal guide/hiking buddy: personable, knowledgeable about the area’s history/geology, and eager to point out all the best photo ops. Thanks Nick!