• Area: 415 square miles
• Population: 59,209 (2000 census)
• Persons/Sq. Mile: 142.7
• % Karst Terrane: approx. 30%
• Number of Reported Caves: 19
• Surveyed Cave Passage: 1 miles
• Longest Cave: 2,400 feet
• Average Length: 246 feet
• Deepest Cave: 75 feet

Major Karst Development Areas:

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

Karstic Formations and Map Symbols:

• Helderberg - DSu
• Ordovician - Ou

Detailed Map - Click to View:

• Frederick County Map Frederick County Map
•