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Old Rag Mountain Hike, Shenandoah National Park

(260+ reviews on the web)
Hiking Trail
Old Rag Mountain is a popular hiking destination with a summit elevation of, located in the Blue Ridge Mountains of the Shenandoah National Park in Virginia's Madison County, near Sperryville.In contrast to most mountains of the Blue Ridge, Old Rag has an exposed (rocky) summit.GeologyOld Rag Mountain is underlain by Old Rag Granite, named for its ubiquitous exposure on the mountain, formed during the Grenville Orogeny about a billion years ago. About 400 million years after the Grenville orogeny during the Catoctin Formation, deposition of basaltic magma occurred during the formation of the Iapetus Ocean, forming a layer of greenstone over the granite. This was followed by the Weverton Formation, Harpers Formation, and Antietam formation in which sand and rock sedimented on the ocean floor forming quartzite and sandstone deposits. Finally a period of sedimentation of shells and skeletons of foraminifera resulted in deposition of a layer of limestone. Approximately 700 million years after the Greenville Orogeny, the Iapetus Ocean began to close resulting in the Alleghenian Orogeny when the Old Rag Granite and layers of rock deposited upon it were transported westward and eventually thrust up over the limestone bed around it, forming Old Rag and the Blue Ridge Mountains.
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Reviews
TripAdvisor
  • Visited Shenandoah this weekend for my fiancĂ©'s birthday. We saved Old Rag for our last day and it was amazing! The rock scramble was very challenging and fun....We loved it! I saw some folks with glo...  more »
  • What a fun hike; trail hiking plus a little bit of rock scrambling. The views at the summit are worth every ounce of sweat.  more »
  • Old Rag ends up being one of the best hikes you can take on the east coast. There are some Acadia ones that are about as good, but Old Rag is tough to beat. You park in a lot that is separate from Sky...  more »