"Volcano Climbing: Indonesia’s Gunung Bromo," by Marv and Jo

"Volcano Climbing: Indonesia’s Gunung Bromo," by Marv and Jo

Photo by mtnrunner2

Photo by mtnrunner2

Photo by Adriana Petit.

Photo by Adriana Petit.

Horizon Field, by Antony Gormley

Horizon Field, by Antony Gormley

"Sierra Nevada Mountain Camp Jenks"

"Sierra Nevada Mountain Camp Jenks"