Patterns in the Mud Hills, The Colorado Plateau is a geologic miracle - petrified sand dunes, limestone cliffs, reefs, swells, canyons, buttes, spires, pinnacles, plateaus, and bentonite clay! I call these the Mud Hills - large expanses of bentonite clay - pretty and interesting when dry, but an impassible slippery mess when wet. Extra interesting stuff. Even more interesting are the volcanic lava bombs lying here at the bottom of the gully. These basalt bullets were launched from a volcano somewhere, and eventually eroded out of these clay hills. #coloradoplateau #bentoniteclay #ourpubliclands #danholmesphoto #geology #earthgallery #ourlonelyplanet #travel #ShotOnCanon #canon #photooftheday #phototour #photography #colors #patterns #naturalabstract #utah