Grade 5 Survey Data

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Although many of the original explorers were only doing Grade 2 surveys, a group led by Arthur Millett and John Stevens of the Chelsea Speleological Society set about a painstaking Grade 5 survey. The PDCMG has been happy to allow this activity to go on, but unfortunate events have resulted in general reciprocal access to the data not being possible, even in degraded form (although we are pleased that access has been given to our geological recorder for use in specific projects). A three A0 sheet printed survey was available for purchase for some time and we were told we were welcome to extract information from that, but it is currently believed unavailable.

Some exploration has been recorded to Grade 5 standard. All the Oxford University Cave Club survey data is available from their website.