Muskox posing in fall tundra near the Dalton Highway in Alaska.
Pika on the Savage River trail in Denali National Park posing on a boulder in the fall color.
Two bighorn sheep rams interacting.
Dall sheep interacting by touching heads on Slope Mountain near the Haul Road in Alaska.
Dall sheep lamb nursing on Slope Mountain near the Haul Road in Alaska.
Dall sheep ram posing on a boulder against blue sky on Primrose Ridge in Denali National Park Alaska sky on Primrose Ridge in Denali National Park Alaska.
Caribou with antlers covered in velvet posing in Denali National Park Alaska.
John A. Roebling Suspension bridge tower illuminated at sunset. This bridge spans the Ohio River between Cincinnati Ohio and Covington Kentucky.
Ash Cave in the Hocking Hills State Park photographed from inside the cave using a fisheye lens.
