Bentonite Clay Formations Cathedral
Kevin Schafer
Bentonite Hills, Capitol Reef
Yva Momatiuk and John Eastcott
Vermillion Cliffs Bentonite Deposits
Jeff Foott
Vermillion Cliffs Bentonite Deposits #1
Jeff Foott
Painted Hills John Day Nm Oregon
Kevin Schafer
Painted Hills John Day Nationl Monument
Kevin Schafer
Capitol Reef National Park
Jeff Foott
Painted Hills John Day Nm Oregon #2
Kevin Schafer