How to hike The Slot canyon in Anza-Borrego Desert State Park, California. Simply named The Slot, this narrow siltstone canyon provides one of the most exciting hikes in Anza-Borrego Desert State Park. Hiking route, map, cost, photos, as a loop and out-and-back. The Slot Canyon Trail in Anza-Borrego Desert State Park, known simply as “The Slot,” is an easy out-and-back hike, that winds through a deep and extremely. The park is very large and has multiple road options to get there. The dirt road to the trailhead is a not well marked off of highway We had no problem driving on the dirt. It's such a unique hike in Anza Borrego — such remarkable topography! The canyon walls get so narrow you have to literally squeeze your way. Slot Canyon is an unmaintained trail off a sand road and far from most visitor traffic. Flash floods formed the breathtaking slot canyon. The slot is a beautiful natural formation nestled in the heart of Anza Borrego State Park, about an hour and a half east of San Diego. . This mike trek is capped. This was our favorite hike in Anza-Borrego. The park has no fees. At. This is an amazingly fun and interesting hike into the bowels of the. The Slot Canyon Trail is located off CA in the center of the park and. The sandstone canyon walls get taller and more animated-looking in their form as you go. Just 20 minutes outside of Borrego Springs, the Anza Borrego slot canyon hike is sure to make a memorable adventure for your whole family.