High angle view of an Aspen tree in an evergreen forest, Rocky Mountain National Park, Colorado, USA

Trees in a forest, Rocky Mountain National Park, Colorado, USA

Reflection of mountains in water, Rocky Mountain National Park, Colorado, USA

Plants at the riverside, Rocky Mountain National Park, Colorado, USA

Hiker standing in a field, Rocky Mountain National Park, Colorado, USA

Low angle view of an overhead cable car, Mountain Village, Telluride, Colorado, USA

Low angle view of an overhead cable car, San Juan Mountains, Mountain Village, Telluride, Colorado, USA

Monastery near mountains, Tengboche Monastery, Sagarmatha National Park, Nepal

Low angle view of a flock of Snow geese (Chen caerulescens) flying, Bosque del Apache National Wildlife Refuge, New Mexico, USA

Low angle view of aspen trees on a mountain, Rocky Mountain National Park, Colorado, USA