1. Close-up of two bull moose tussling in the middle of a road, their antlers locked.

    Bull Moose, Antelope Flats, Grand Teton National Park. October, 2019.

    Published on December 8, 2019

  2. Two bull moose face to face, locking antlers and tussling in the middle of a road.

    Bull Moose, Antelope Flats, Grand Teton National Park. October, 2019.

    Published on December 8, 2019

  3. Two bull moose standing face to face.

    Bull Moose, Antelope Flats, Grand Teton National Park. October, 2019.

    Published on December 7, 2019

  4. Two bull moose, heads-down, staring at each other and preparing for a tussle.

    Bull Moose, Antelope Flats, Grand Teton National Park. October, 2019.

    Published on December 7, 2019

  5. Two bull moose facing off, staring at each other, about to lock antlers.

    Bull Moose, Antelope Flats, Grand Teton National Park. October, 2019.

    Published on December 6, 2019

  6. Two bull moose, facing off. The one in the foreground has bigger paddles and is looking left; the one in the background is staring at the first one.

    Bull Moose, Antelope Flats, Grand Teton National Park. October, 2019.

    Published on December 6, 2019

  7. A bull moose, heads-down, browsing in the brush near Ditch Creek.

    Bull Moose, Antelope Flats, Grand Teton National Park. October, 2019.

    Published on December 5, 2019

  8. Two large bull moose standing next to each other at Ditch Creek during an afternoon snow.

    Bull Moose, Grand Teton National Park. October, 2019.

    Published on December 5, 2019

  9. A large bull moose standing in the sage brush near Ditch Creek while it snows.

    Bull Moose, Grand Teton National Park. October, 2019.

    Published on December 4, 2019

  10. A bull moose standing in the sage brush near Ditch Creek while it snows.

    Bull Moose, Grand Teton National Park. October, 2019.

    Published on December 4, 2019

  11. A bull moose reaching back to scratch his side with his paddles.

    Bull Moose, Grand Teton National Park. October, 2019.

    Published on December 3, 2019

  12. A bull moose standing among sage brush while it snows.

    Bull Moose, Grand Teton National Park. October, 2019.

    Published on December 3, 2019

  13. A male pronghorn foraging in the snow. He has clumps of snow on his horns.

    Pronghorn, Grand Teton National Park. October, 2019.

    Published on December 2, 2019

  14. A pronghorn walking on a grassy field while it snows. Its fur is wet.

    Pronghorn, Antelope Flats, Grand Teton National Park. October, 2019.

    Published on December 2, 2019

  15. A male pronghorn standing on a grassy field while it snows. It is looking towards the camera.

    Pronghorn, Antelope Flats, Grand Teton National Park. October, 2019.

    Published on December 1, 2019

  16. Side view of a bison bull crossing a road.

    Bison, Antelope Flats, Grand Teton National Park. October, 2019.

    Published on December 1, 2019

  17. Close-up portrait of a bison bull.

    Bison, Grand Teton National Park. October, 2019.

    Published on November 30, 2019

  18. A bison bull, standing on the road.

    Bison, Grand Teton National Park. October, 2019.

    Published on November 30, 2019

  19. Grand Teton seen behind a line of trees.

    Grand Teton National Park, Wyoming. October, 2019.

    Published on November 29, 2019

  20. A field of pahoehoe and ʻaʻa lava. In the foreground, a shrub growing in the cinder, and in the background, a spatter cone.

    Spatter Cones, Craters of the Moon National Monument & Preserve. October, 2019.

    Published on November 29, 2019

  21. A field of pahoehoe and ʻaʻa lava in front of a couple of spatter cones.

    Spatter Cones, Craters of the Moon National Monument & Preserve. October, 2019.

    Published on November 28, 2019

  22. Ropes of pahoehoe lava alongside the Cave Area trail in Craters of the Moon.

    Lava, Cave Area, Craters of the Moon National Monument & Preserve. October,…

    Published on November 28, 2019

  23. A big rope of pahoehoe lava alongside the Cave Area trail of Craters of the Moon.

    Lava, Cave Area, Craters of the Moon National Monument & Preserve. October,…

    Published on November 27, 2019

  24. A field of ʻaʻa and pahoehoe lava along the Cave Area trail of Craters of the Moon.

    Lava, Cave Area, Craters of the Moon National Monument & Preserve. October,…

    Published on November 27, 2019