Recommended Users: Equestrians, Hikers, Mountain Bikers. Singletrack trail. 0.2 miles in length. Difficulty: Easy/Easiest (IMBA Trail Difficulty Rating System). U’waiv (pronounced yoo-ahv) means “valley” in Southern Paiute. This trail is used to connect the upper portion of the Santa Clara/Land Hill ACEC to the river corridor. It traverses a deep wash hence the Paiute word for valley. The trail is singletrack open to all user groups, so exercise caution and watch for others.