For our Geology loving friends: "The oldest rocks in the Blue Ridge Mountains were created over a billion years ago as magma deep within the earth's crust moved upward. Over eons it cooled, fractured, and was joined by younger metamorphic rocks formed from sedimentary deposits. All were altered and eroded to shape today's granite peaks and sylvan hollows."
For our Biology loving friends: Shenandoah National Park includes 300 square miles of the Blue Ridge Mountains in the southern Appalachians. The park rises above the Virginia Piedmont to its east and the Shenandoah Valley to its west. Two peaks, Stony Man and Hawksbill, exceed 4,000 feet. The range of elevation, slopes and aspects, rocks and soils, precipitation, and latitude create a mix of habitats.
Tens of thousands of living creatures make their homes in the park, from black bear resting beneath rock overhangs, to tiny aquatic insects darting through cool mountain streams. The park’s many worlds are fascinating to explore.
Most of Shenandoah’s landscape is forested. In the process of photosynthesis, converting light, water, and minerals into foods, green plants give off water. From a distance this air-born water creates a faint haze giving the Blue Ridge its name. In recent years, the haze has taken on other ingredients, introduced by humans. Air is among the resources the staff at Shenandoah National Park is duty bound to protect.
Hardwood forests dominate the park. The forests are the result of many disturbances, some measured in geologic time, others in minutes. Remnants of boreal forests remind us that continental glaciers came near. Strands of barbed wire embedded in trunks mark the edges of former pastures. Uprooted trees show the path Tropical Storm Fran made in 1996.
Reference: http://www.nps.gov/shen/naturescience/index.htm
Be sure to tour Skyline Drive which has over 75 scenic overlooks.
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