Granite rock, good for climbing, canyoneering, and hiking. My son took me here today for an adventurous canyoneering trip. We had a great 8 mile hike with about 5 and 1/2 repels of different highlights. I would recommend this spot for climbers that are looking for an alternate spot for after rain and there is no climbing allowed at red rock or if you just want to try a different spot. If you are going to come out, I would recommend a high clearance vehicle. I found these directions on line: To get to Keyhole Canyon from Las Vegas, take Hwy US 95 south through Henderson toward Boulder City. From the junction of Hwys 93 and 95, head south on 95 toward Searchlight for almost 16 miles. At an intersection, take a left (east) on to a dirt road. Follow this dirt road for just over 2 miles to a series of power lines. Take a right (south) on the SECOND power line road, travel almost 2 miles to the Keyhole Cutoff. Take a left (east) and head less than a half mile to the mouth of the canyon. The crags are about a 1-minute hike from the car. There are a bunch of pretty neat hyroglifics on the rocks. read more