AdventuresofRangerSarah, 26 days ago

Ranger Sarah views the Grand Canyon. The story of the formation of the Grand Canyon begins almost two billion years ago with the formation of the igneous and metamorphic rocks of the inner gorge. Above these old rocks lie layer upon layer of sedimentary rock, each telling a unique part of the environmental history of the Grand Canyon region.

#rangersarah #adventuresofrangersarah #Arizona #grandcanyonnationalpark #geology #geologyrocks #nature #outdoors #nationalpark #nationalparkgeek