An off-line hiking app for the Anza-Borrego Desert and surrounding area. You can download 4 free Anza-Borrego Desert off-line topo / hiking maps and 1 free satellite map. With pre loaded hikes and dirt roads from BorregoHiking. Com. Switch on the GPS and drive up to the trail head. You can enable the dirt/wash road layer to show the last known location of a dirt road.