Subscribe Now! National Geographic Magazine $15
Visit our Online Shops

Sign up for free

Newsletters

Once a month
get new photos
and expert tips.

Navbiotum Volcano

Photo: An aerial view of a caldera
Navbiotum Volcano lies dormant on the southern shore of Lake Turkana in Kenya. Once known as Lake Rudolf, Lake Turkana is the northernmost lake in the Great Rift Valley, a highly volcanic region that runs 3,700 miles (6,000 kilometers) from Mozambique to Syria.
Photograph by Richard du Toit/Minden Pictures

Natural Disasters Topics

SPECIAL ADVERTISING SECTION

Photo: Glass of water

Take Quiz

Test your water knowledge.

Photo: 2009 Winner

Photo Contest

Find out who takes home the Grand Prize!