VERTICAL 170 A survey is the only way you can find out how deep your cave is and where it is going. It is a guide that indicates where to look for a continuation or passages that are likely to connect

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Date: 2007-09-05 08:24:11		VERTICAL 170 A survey is the only way you can find out how deep your cave is and where it is going. It is a guide that indicates where to look for a continuation or passages that are likely to connect Add to Reading List Source URL: www.cavediggers.com Download Document from Source Website File Size: 650,18 KB Share Document on Facebook