Wild Places in the Southwest USA: For #RockinTuesday how about ancient sand dunes in the Wingate Formation (~200 my, lower 3rd of photo with striping)? These were HUGE dunes, like in the Sahara desert. How can you tell? High-angle beds & very large bedding planes (~80 ft high). Waterpocket Fold, Utah #GlenCanyonNRA #geology

For #RockinTuesday how about ancient sand dunes in the Wingate Formation (~200 my, lower 3rd of photo with striping)? These were HUGE dunes, like in the Sahara desert. How can you tell? High-angle beds & very large bedding planes (~80 ft high). Waterpocket Fold, Utah #GlenCanyonNRA #geology