• Area: 520 square miles
• Population: 44,598 (2000 census)
• Persons/Sq. Mile: 85.8
• % Karst Terrane: approx. 40%
• Number of Reported Caves: 159
• Surveyed Cave Passage: 28 miles
• Longest Cave: 40,814 feet
• Average Length: 944 feet
• Deepest Cave: 502 feet

Major Karst Development Areas:

• Burkes Garden
• Thompson Valley
• ??? Mountain 

Karstic Formations and Map Symbols:

• Undivided Ordovician - Ou
• Greenbriar - Mg

Detailed Map - Click to View:

• Tazewell County Map Tazewell County Map
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