• Area: 600 square miles
• Population: 20,808 (2000 census)
• Persons/Sq. Mile: 34.7
• % Karst Terrane: approx. 40%
• Longest Cave: 7,698 feet
• Average Length: 269 feet
• Deepest Cave: 215 feet
• Number of Reported Caves: 183
• Surveyed Cave Passage: 9 miles

Major Karst Development Areas:

• Shenandoah Valley
• ??? Valley
• ??? Ridge

Karstic Formations and Map Symbols:

• Helderberg - DSu
• Ordovician - Ou

Detailed Map - Click to View:

• Rockbridge County Map Rockbridge County Map
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