A bull elk sniffs the air for nearby cows during the rut in Yellowstone National Park.
Sunrise at Blacktail Ponds Overlook
First light on the Cathedral Group in Grand Teton National Park, Wyoming.
A black bear chews on autumn leaves in Grand Tetons National Park, Wyoming.
Bright yellow trees stand tall from dark, black volcanic soil against the deep blue sky along a roadside in central Wyoming during autumn
Sunrise and clouds on the Grand Teton.
A bald eagle, perched high in a tree, surveys the surrounding Gros Ventre wilderness near Jackson, Wyoming.
Pinecone on Bough
A single pinecone hangs from a pine bough with autumn foliage in the background.
A pair of aspen trees, showing bright yellow fall leaves, is backlit by the sun.
A close-up of forest underbrush with colorful autumn folaige in the background.
Old aspen tree trunks surrounded by forest undergrowth in fall colors, brightly backlit by the afternoon sun.
Mormon Row, Jackson Hole, Wyoming - an iconic photograph of an old pioneer barn with a peaked roof that mirrors the Grand Teton mountains behind it.
An old barn sits in a field along Mormon Row in Jackson Hole, Wyoming. Trees and mountains are visible in the background, below a deep blue sky with wispy clouds.
Aspen trees and forest undergrowth display brilliant fall colors, backlit by the afternoon sun.
Twigs and Berries
A close-up of small forest plants colored red, orange and yellow in autumn, and an old, dead tree trunk.
With the Grand Teton range in the background, a single white horse grazes in a pasture in Jackson Hole. Early autumn color is visible on the surrounding foliage.
Not One More Step
Grand Teton National Park, Wyoming - a large, male buffalo glares at the camera, with horses, trees and the Grand Teton range behind.
A fallen tree with three broken branches lies in a patch of bright, red fall foliage.
Pokey or Gumby?
Bright green grass pokes up from a patch of red autumn leaves.
Jackson Hole, Wyoming - seen from Shadow Mountain, rays of light from the setting sun illuminate autumn aspens.
Close-up of bright red and orange aspen leaves.
Behind bright autumn colors, Mount Moran reflects in the glassy surface of the Snake River in Jackson Hole, Wyoming.
Jackson Hole, Wyoming - tall grass at an abandoned ranch near Mormon Row catches the morning sunlight.
Jackson Hole, Wyoming - an old fence surrounded by tall autumn grasses with cottonwood trees in the distance.
Teewinot Peak reflected in String Lake, Grand Teton National Park, Wyoming. Teewinot is part of the Cathedral Group, the most iconic mountains in the Teton Range.
Upper Falls, Yellowstone River
Sunlight illuminates clouds of mist rising from the Yellowstone River as it tumbles over a tall cliff in the heart of the Grand Canyon of the Yellowstone in Yellowstone National Park, Wyoming.