Granite tors, giant rounded boulders created by exfoliation, stand proud of the landscape at The Granites, Currawinya National Park, western Queensland, Australia. An outcropping of a large underground batholith (an igneous intrusion) in a mostly sedimentary sandstone landscape, the rounded shape of these tors reflects joint lines or cracks in the batholith which created blocks of granite and allowed weathering water to percolate around them, starting the process before surface erosion exposed the rock.