Connecting Newberry Springs and Crucero Road, Hidden Valley Wash is a straight-through connecting trail taking users through the Caddy Mountains and deep into the heart of the Mojave Desert. The western half of the trail is easy, with a trail surface that is primarily hard-packed dirt and sand with small rocks. It takes you past several old pump sites and many large, open areas suitable for dispersed camping. The eastern half becomes much rougher and traverses a wide desert wash with soft, deep sand, where 4WD and high clearance are necessary. Airing down will greatly help in aiding tire traction. The trail is very remote with limited cell coverage, where solitude can easily be found.