America,American,Arid,Astonishing,Barren,Bewilder,Bewildering,California,close,up,Color,Colour,Cracked,Cracks,Death,Valley,National,Park,Desiccated,Desolated,dried,Dry,Lake,Earth,Crust,Sciences,ecology,Environment,Environmental,environmentalism,Eroded,Erosion,Erratic,Flat,Mud,Friction,ground,Inexplicable,land,Landscape,moving,Rocks,N.P.,Np,Oddity,outdoors,outside,Parched,path,Playa,Preservation,preserve,Protected,Racetrack,rock,Sabkhas,Sailing,Stones,Sliding,slope,sloping,stone,terrain,Track,Tracks,trail,transportation,travel,U.S.,U.S.A.,United,States,US,USA,Vertical