Rockingham County, Virginia

  • Area: 851 square miles
  • Population: 67,725 (2000 census)
  • Persons/Sq. Mile: 79.6
  • % Karst Terrane: approx. 40%
  • Longest Cave: 25,000 feet
  • Average Length: 420 feet
  • Deepest Cave: 200 feet
  • Number of Reported Caves: 111
  • 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: