Subscribe Now! National Geographic Magazine $15
Home
Animals
Daily News
Environment
Games
Green Guide
History
Kids
Maps
Music
Photography
Science & Space
Travel & Cultures
Video
National Geographic Channel
Magazines
National Geographic
Traveler
Adventure
Shop
Subscriptions
TV & Film
Travel With Us
Our Mission
Visit our Online Shops
Books & Atlases
Clothing & Accessories
DVDs
Maps
Catalog Quick Shop

Sign up for free

Newsletters

Once a month
get new photos
and expert tips.

Sign up

Photo Gallery: Rocks
PREVIOUS7 of 15NEXT
Photo: Sedimentary rock at Elgol Beach
Photo: Etna's glowing lavaPhoto: Lava oozes from Kilauea, Hawaii Volcanoes National ParkPhoto: Basalt stepping stonesPhoto: Pahoehoe lavaPhoto: Devils Tower, WyomingPhoto: Zion rock layersPhoto: Sedimentary rock at Elgol BeachPhoto: Sedimentary rock formationPhoto: Box Canyon climbingPhoto: Zion's Checkerboard MesaPhoto: Chert granulesPhoto: Snaking white rockPhoto: White rock in folded gneissPhoto: Greek marble quarryPhoto: Schist rock formations
ENLARGE
This section of eroded sedimentary rock on Elgol Beach on the Island of Skye, Scotland, mimics bone. Erosion shaped its honeycombed appearance.
Photograph by John McKenna/Alamy

More Photo Galleries
Photo: Unpolished ruby

Photo Gallery: Gems

Photo: Pink chalcedony

Photo Gallery: Minerals

Photo: Virunga mountains

Photo Gallery: Plate Tectonics

Photo: Grand Canyon in Arizona

Photo Gallery: Canyons

Earth Topics

SPECIAL ADVERTISING SECTION

Photo Contest

Find out who takes home the Grand Prize!

View Gallery

Take Quiz

Test your water knowledge.

Learn More

Six Degrees Book and DVD
Image: Cover of Six Degrees: Our Future on a Hotter Planet

Get an eye-opening warning of the dangers of climate change, one degree at a time.

Buy Now

Forces of Nature
Photo: A volcano erupting

Guide to the most powerful forces on Earth: earthquakes, volcanoes, hurricanes, and tornadoes.

Experience

Support Conservation
Photo: Two penguins

Help conserve the world's natural resources.

Learn More