Twelve visitor-hours, which may be aggregated continuously, intermittently, or simultaneously by one or more persons at a given site. Used by agencies to count visits to developed sites, trails, and backcountry. Found on http://www.americantrails.org/
Twelve visitor-hours, which may be aggregated continuously, intermittently, or simultaneously by one or more persons at a given site. Used by agencies to count visits to developed sites, trails, and backcountry.