Turret Arch, seen here through North Window, is one of three giant arches on the Windows trail. The North Window and South Window are arches known together as the Spectacles.
The park's arches consist of sandstone that contains iron oxide that give them that red coloring.
These arches, which together are known as the Double Arch, are two of more than 2,000 arches in the park.
Kait Thomas, an interpretative ranger at Arches National Park, stands in the Fiery Furnace below the Twin Arches.
Ephemeral Pools, seen here in front of Organ rock, fill with rainwater and are home to tiny ecosystems of plants and organisms.
The Wolfe Ranch trail contains ample rock art. Humans began migrating to Arches about 10,000 years ago.
Gopher snakes are nonvenomous. They are often mistaken for rattlesnakes because they have similar markings and can vibrate their tails.
The desert hairy scorpion grows to between 4-7 inches long and can live up to 20 years.
The collared lizard pursues prey by running on its hind legs. Its stride can be up to three times the length of its bodies.
The peregrine falcon uses a dive called a stoop to snatch smaller birds in mid-flight.
Sunset in the Salt Valley marks the beginning of the day for nocturnal wildlife living in Arches National Park.
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