1311-446 - A rock bridge in Devil's Playground where Trolls could hide, Petrified Forest National Park, Arizona, United States of America, North America
1311-454 - A ridge of hoodoos that resemble dog heads in Devil's Playground at Petrified Forest National Park, Arizona, United States of America, North America
1311-449 - Three hoodoos in a triangular formation in Devil's Playground called the Unholy Trinity, Petrified Forest National Park, Arizona, United States of America, North America
1311-447 - South side of Damnation Mesa on the north end of Devil's Playground in Petrified Forest National Park, Arizona, United States of America, North America
1311-448 - Three hoodoos in a triangular formation in Devil's Playground called the Unholy Trinity, Petrified Forest National Park, Arizona, United States of America, North America
1311-451 - Boulders in Devil's Playground called Gnomes of Desolation, Petrified Forest National Park, Arizona, United States of America, North America
1311-445 - A tall hoodoo called the Leviathan in Devil's Playground, Petrified Forest National Park, Arizona, United States of America, North America
1311-450 - Three hoodoos in a triangular formation in Devil's Playground called the Unholy Trinity, Petrified Forest National Park, Arizona, United States of America, North America
1311-397 - Large storm approaching Blue Mesa in Petrified Forest National Park, viewed from the Red Basin Trail, near Holbrook, Arizona, United States of America, North America
1311-364 - A dry waterfall made of purple bentonite in the Flat Tops of Petrified Forest National Park, Arizona, United States of America, North America
1311-362 - A dome shaped hill of purple bentonite with a rocky flat top in Petrified Forest National Park, Arizona, United States of America, North America
1311-361 - Blood red ridges of Bentonite clay on the east side of Tiponi Point in Petrified Forest National Park, Arizona, United States of America, North America
1218-1478 - Woman hiking along The Petrified Forest Loop Trail inside Theodore Roosevelt National Park, North Dakota, United States of America, North America
1218-1480 - Beautiful sight on The Petrified Forest Loop Trail inside Theodore Roosevelt National Park, North Dakota, United States of America, North America
1218-1479 - Beautiful sight on The Petrified Forest Loop Trail inside Theodore Roosevelt National Park, North Dakota, United States of America, North America
1218-1477 - Man enjoying the view along The Petrified Forest Loop Trail inside Theodore Roosevelt National Park, North Dakota, United States of America, North America
1311-356 - A hoodoo formation called Medusa's Child, below the cliffs of Agate Plateau in Petrified Forest National Park, Arizona, United States of America, North America
1311-357 - A hoodoo formation called Medusa's Child below the cliffs of Agate Plateau in Petrified Forest National Park, Arizona, United States of America, North America
1311-355 - A long formation of purple Bentonite clay called the Purple Peninsula, in Petrified Forest National Park, Arizona, United States of America, North America
1311-351 - Large pieces of petrified wood on the west side of Red Basin in Petrified Forest National Park Arizona, United States of America, North America
1311-350 - A Bentonite formation in Petrified Forest National Park near Crystal Forest called the Battleship, Arizona, United States of America, North America
1311-348 - Flat top hoodoo on the edge of a cliff along the Billings Gap Trail on Blue Mesa, Petrified Forest National Park, Arizona, United States of America, North America
1311-347 - A hoodoo shaped like a table top, on a cliff along the Blue Mesa in Petrified Forest National Park, Arizona, United States of America, North America
1311-349 - Natural stone bridge of petrified wood called Keystone Bridge, located on Blue Mesa in Petrified Forest National Park, Arizona, United States of America, North America
1311-346 - A sheer cliff of rock jutting out from the Blue Mesa along the Billings Gap Trail in Petrified Forest National Park, Arizona, United States of America, North America
1311-345 - An eroded sandstone formation called a Sandcastle, below the Blue Mesa in Petrified Forest National Park, Arizona, United States of America, North America
1311-343 - Panorama of three hoodoos shaped like kings, on the edge of the Blue Mesa in Petrified Forest National Park, Arizona, United States of America, North America
1311-342 - A rock hoodoo shaped like a horse head, along the base of Blue Mesa in Petrified Forest National Park, Arizona, United States of America, North America
1311-344 - A giant petrified log on a sandstone pedestal on the edge of the Blue Mesa in Petrified Forest National Park, Arizona, United States of America, North America
1311-335 - Keyhole Mesa, named for a keyhole shaped cave on its north side, in the First Forest of Petrified Forest National Park, Arizona, United States of America, North America
1311-334 - Balanced rock that resembles a toadstool, petrified wood scattered around the formation, Petrified Forest National Park, Arizona, United States of America, North America
1311-338 - A stone garden of Toadstool rocks on the south end of Keyhole Mesa in Petrified Forest National Park, Arizona, United States of America, North America
1311-337 - Balanced rock that resembles a toadstool, petrified wood scattered around the formation, Petrified Forest National Park, Arizona, United States of America, North America
1311-336 - Balanced rock that resembles a toadstool, petrified wood scattered around the formation, Petrified Forest National Park, Arizona, United States of America, North America
1311-341 - Formation called Agate Mesa, viewed from a group of petrified wood in the foreground, Petrified Forest National Park, Arizona, United States of America, North America
1311-297 - One of the few petrified trees almost intact, The Onyx Bridge in Petrified Forest National Park, Arizona, United States of America, North America
1311-299 - One of the few petrified trees almost intact, The Onyx Bridge in Petrified Forest National Park, Arizona, United States of America, North America
1311-295 - A section of Petrified Forest National Park called Angel Garden, northwest of the Onyx Bridge, Arizona, United States of America, North America
1311-298 - One of the few petrified trees almost intact, The Onyx Bridge in Petrified Forest National Park, Arizona, United States of America, North America
1311-296 - The landmark in Petrified Forest National Park called Squared Off Butte, a marker on the way to Onyx Bridge, Arizona, United States of America, North America
1311-292 - Panorama of a valley that is the Gateway to the Devil's Playground in Petrified Forest National Park, Arizona, United States of America, North America
1311-288 - Panorama of a ridge in the Devil's Playground of crumbling hoodoos, Petrified Forest National Park, Arizona, United States of America, North America
1311-291 - Hills of Demons and Fallen Angels, The Devil's Playground in Petrified Forest National Park, Arizona, United States of America, North America
1311-290 - Panorama of a ridge in the Devil's Playground of crumbling hoodoos, Petrified Forest National Park, Arizona, United States of America, North America
1311-294 - A ridge in the Devil's Playground of crumbling hoodoos that resemble Goblins, Petrified Forest National Park, Arizona, United States of America, North America
1311-287 - An old windmill marking the boundary of the Devil's Playground in Petrified Forest National Park, Arizona, United States of America, North America
1311-293 - A ridge in the Devil's Playground of crumbling hoodoos that resemble Goblins,Petrified Forest National Park, Arizona, United States of America, North America
1311-286 - One of many fossil filled boulders in the Clam Beds along Red Basin Trail in Petrified Forest National Park, Arizona, United States of America, North America
1311-285 - The eastern edge of the Clam Bed Mesa along the Red Basin Trail in Petrified Forest National Park, Arizona, United States of America, North America
1311-284 - The eastern edge of the Clam Bed Mesa along the Red Basin Trail in Petrified Forest National Park, Arizona, United States of America, North America
1311-225 - Salt covered hills of Bentonite in the Petrified Forest National Park along the Blue Forest Trail, Arizona, United States of America, North America
1311-222 - Salt covered hills of Bentonite in the Petrified Forest National Park along the Blue Forest Trail, Arizona, United States of America, North America
1311-227 - Formation in the Petrified Forest National Park called a Teepee viewed from the main road that runs through the park, Arizona, United States of America, North America
1311-213 - Huge formations of Bentonite Clay called the Teepees in the Petrified Forest National Park, Arizona, United States of America, North America
1311-220 - Hills of Bentonite Clay called Teepees at the start of the Blue Forest Trail in Petrified Forest National Park, Arizona, United States of America, North America