Mount Everest, Nepal

Photograph by Nikolay Radosnov, My Shot

This Month in Photo of the Day: Adventure and Exploration Photos

A Sherpa carries luggage in the vicinity of the Tengboche Monastery, Nepal.

(This photo and caption were submitted to My Shot.)

See more of Your Nepal Trekking pictures »

Redwood Tree, California

Photograph by Michael Nichols, National Geographic

This Month in Photo of the Day: Adventure and Exploration Photos

Partway up a 350-foot tree, botanist Marie Antoine (at right) passes a slender core sample of its wood750 years of redwood biographyto canopy ecologist Giacomo Renzullo. Research now shows that the older such trees get, the more wood they put on.

See more pictures from the October 2009 feature story, "The Super Trees."

Learn more about the Redwood Transect project »

Sunset Skiing, Utah

Photograph by Erik Seo

This Month in Photo of the Day: Adventure and Exploration Photos

Max Kuszaj skis at sunset in Alta, Utah.

Find out the story behind this shot and see more pictures of extreme adventure sports.

See pictures of skiing and snowboarding shot by our readers »

Mutnovsky Volcano, Kamchatka

Photograph by Carsten Peter, National Geographic

This Month in Photo of the Day: Adventure and Exploration Photos

A volcanologist strides through a murky expanse of steam on Mutnovsky Volcano during an expedition to Kamchatka, Russia. The steam billows from a fumarole, or a vent created by heated groundwater and rising volcanic gas, and it serves as a visible reminder that the peninsula is one of the most volcanically active regions in the world, with some 29 active volcanoes.

Explore Kamchatka »

Ice Climbing, Croatia

Photograph by Luka Tambaca, Your Shot

This Month in Photo of the Day: Adventure and Exploration Photos

The long retention of low temperature favored the icing of small Sopot waterfall on Medvednica mountain. The red sky comes from the city lights of nearby Zagreb. Sopot waterfall is the only one in the area, therefore alpinists from Zagreb use every chance for climbing it and staying in shape.

(This photo and caption were submitted to Your Shot.)

See pictures of climbing shot by our readers »

Deepwater Whip Coral, Japan

Photograph by Brian Skerry, National Geographic

This Month in Photo of the Day: Adventure and Exploration Photos

What looks like a tangle of gnarled cables is in fact a forest of deepwater whip coral in Suruga Bay. Each strand is studded with feeding polyps that reach tiny tentacles into the currents to grab floating food.

See more pictures from the November 2010 feature story "3 Degrees of Japans Seas."

See more pictures of ocean corals »

Underwater Surfer

Photograph by Tony Heff, My Shot

This Month in Photo of the Day: Adventure and Exploration Photos

Surfer Coco Ho is momentarily suspended weightless between the ocean's surface and the shallow reef.

(This photo and caption were submitted to My Shot.)

See pictures of surfing shot by our readers »

Biking, Utah

Photograph by Mike Schirf

This Month in Photo of the Day: Adventure and Exploration Photos

Taken last July out on the salt flats on the border of Utah and Nevada with a good friend of mine who is an aspiring triathlete.

Find out the story behind this shot and see more pictures of extreme sports.

See more pictures of cycling shot by our readers »

Kayaker, Outlet Falls

Photograph by Jed Weingarten, Your Shot

This Month in Photo of the Day: Adventure and Exploration Photos

Luke Spencer paddles off Outlet Falls in Washington State.

(This photo and caption were submitted to Your Shot.)

See more pictures of paddling shot by our readers »

Dan's Cave, Abaco Island

Photograph by Wes C. Skiles, National Geographic

This Month in Photo of the Day: Adventure and Exploration Photos

Following the guideline her life depends on, a diver threads the needle through a stalagmite forest in Dan's Cave on Abaco Island. A single, misplaced fin kick can shatter mineral formations tens of thousands of years old.

See more pictures from the August 2010 feature story "Deep Dark Secrets."

Learn more about the Blue Holes project »