Additionally, BLM cultural personnel will review previous site records, associated research documents, and additional pertinent information to determine if the site has been evaluated in its comprehensive context. The site will be revisited and recorded, if deemed necessary, to assist in future site management and protection. A total of 231 visitors were recorded in the register in 1994. The percentage of actual use recorded in the register has not been determined at Pictograph Cave. Using this general estimate for Pictograph Cave and including estimated visitation to the Skylight Entrance, total visitation in 1994 computes to over 500 visitors.
Organized groups contribute a considerable proportion of visitor traffic.
These groups include the Boy Scouts, Willamette University Outdoor Club, the Pathfinder Club of Corvallis, the OMSI Cascade Science School, and others. High school students and individual Bend residents also make considerable contributions to visitor traffic. Concern has been expressed regarding potential resource impacts from present and increased visitation to the site, including impacts to the geologic resources of Pictograph Cave. Approximately 90 bolts have been place at the Skylight Entrance extending approximately 125 feet underground, according to a 1995 Bolt Survey from the Willamette Valley Grotto. Pictograph cave provides opportunities for unique climbing experiences which cannot be found on typical vertical routes.