Geology of National Parks, 3D and Photographic Tours
View of part of the Needles in Canyonlands National Park. Shrub pinyon pines and junipers grow on the red sandy soil. Between plants, the soil's surface hosts a fragile biological-soil crust consisting of cyanobacteria, lichens, mosses, fungi, and algae. To learn more about biological-soil crusts (also called cryptogamic soils or microbiotic crust) (Belnap, J., 2001).