Best Rocks to Climb

There are three types of rocks to climb on: granite, sandstone, and limestone.

Granite -  forms from cooling pockets of magma that slowly hardens and cracks which makes it ideal for crack climbing.                                             

http://www.panoramio.com/photo/49690236

Sandstone - is sedimentary, which means that small debris is cemented together by water and pressure of other minerals and debris. 

http://bayimages.net/view-photos/sandstone-rock-weather-face-18160.html

Limestone - is also sedimentary, this type of rock is formed by the minerals calcite and aragonite. Most limestone is composed of skeletal fragments of marine organisms such as coral. 

http://www.123rf.com/photo_13075210_limestone-mountain-cliff-face.html