Alleghany County, Virginia

  • Area: 445 square miles
  • Population: 12,926 (2000 census)
  • Persons/Sq. Mile: 29.0 
  • % Karst Terrane: approx. 30%
  • Longest Cave: 38,353 feet
  • Average Length: 673 feet
  • Deepest Cave: 266 feet
  • Number of Reported Caves: 175
  • Surveyed Cave Passage: 22 miles

Major Karst Development Areas:

  • Jackson River Valley
  • Potts Creek Valley
  • Warm Springs Valley

Karstic Formations and Map Symbols:

  • Helderberg - DSu
  • Undivided Ordovician - Ou

Detailed Map - Click to View: