<p>National Geographic Your Shot contributor Adam Henning's sweeping photo of an Icelandic valley was one of 20 chosen for a Travelogue story compiled by one of our photo editors.</p> <p>"On a cloudy day we traveled to the west end of the Vatnajökull Glacier in Iceland," Henning says. When the clouds opened, the travelers saw "this amazing valley with Eyjafjallajökull and Katla standing over a river floor layered with black ash, sand, and lava from years of eruptions and flooding."</p>

Glacier Valley, Iceland

National Geographic Your Shot contributor Adam Henning's sweeping photo of an Icelandic valley was one of 20 chosen for a Travelogue story compiled by one of our photo editors.

"On a cloudy day we traveled to the west end of the Vatnajökull Glacier in Iceland," Henning says. When the clouds opened, the travelers saw "this amazing valley with Eyjafjallajökull and Katla standing over a river floor layered with black ash, sand, and lava from years of eruptions and flooding."

Photograph by Adam Henning, National Geographic Your Shot

Travel 365: Best of August 2013

See the ten most popular Travel 365 pictures from National Geographic.

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