Peter has been exploring and mapping caves since 1990 with the Potomac Speleological Club (PSC) and the Germany Valley Karst Survey (GVKS).
He has been caving in seven states, France and Mexico. He participated in Bill Stone's 2001-02 Infiernillo Canyon Expedition to Tamaulipas, Mexico, and his 2003 expedition to Cueva Cheve, Mexico, which set a depth record for the Western Hemisphere.
Since 1993, he has been surveying in Germany Valley, Pendleton County, W.Va., and was at the first Germany Valley Karst Survey weekend in 1999. He is a leader in the exploration and survey of Memorial Day Cave, where he surveyed almost eight miles of virgin cave and spent more than 100 nights in underground camps.
In the 1990s, he explored and mapped Hardy County, W.Va., caves, and was the West Virginia Speleological Survey chairman for the county.
He is currently president of the Potomac Speleological Club, Arlington, Va.