• Area: 357 square miles
• Population: 16,657 (2000 census)
• Persons/Sq. Mile: 46.7
• % Karst Terrane: approx. 50%
• Longest Cave: 118,272 feet
• Average Length: 1287 feet
• Deepest Cave: 718 feet
• Number of Reported Caves: 253
• Surveyed Cave Passage: 62 miles

Major Karst Development Areas:

• Wilburn Valley
• New River Karst Peneplain
• Sinking Creek Valley

Karstic Formations and Map Symbols:

• Undivided Ordovician - Ou
• Greenbriar - Mg

Detailed Map - Click to View:

• Giles County Map Giles County Map
•