Discovery of the Echo Room in Pettyjohn Cave and Second Mile of the Cave Survey

April 20, 1969 – Marion O. Smith and Richard Schreiber starting mapping toward the Volcano Room from the main entrance room and after 143.71 feet, station G8 the bottom of a 5.2 foot vertical climb, reached the first mile of survey. They continued the survey north about sixty feet reaching a deep chasm that dropped …

Discovery of the Echo Room in Pettyjohn Cave and Second Mile of the Cave Survey Read More »