Blue Diamond is were you will find some incredible high desert singletrack. The firm desert floor makes the tight twisty trails fast and they go on for miles. There are some good climbs and switch backs on the south side of the road that offer great views of Vegas, or stay on the north side and enjoy relatively flat trails that will make anyone smile. If you are looking for a challenge take the Late Nite trail on the north side. I found it to be the most technical in the park with a good climb from the parking lot and some good rock riding on the way down. Be sure to find a loop though the town of Blue Diamond. It is like a oasis in the desert. Take a camera and alot of water!!!