Progress in cave detection using resistivity

Restarted activity

by Bill Buxton, 01 October 2004

I have recently started running tests with the club’s resistivity equipment and have found that the equipment and data gathering software are excellent but are let down by the imaging software which only seemed to plot indistinct smudges.
On obtaining new program to analyse and plot resistance readings, I needed a shallow cave with a single large passage to test it on, so chose CwmDwr3 in the quarry.
Upon running tests over CwmDwr3 I obtained a superb section of the cave. (fig. 1) This appears to be at about the right depth and the correct size of passage.
So I then ran a test beyond the known cave (which ends at a surface collapse) and obtained the plot shown in fig. 2, which appears to show an unknown continuation of the cave.
This appears to be at about the right depth and the correct size of passage.
So I then ran a test beyond the known cave (which ends at a surface collapse) and obtained a promising plot, which appears to show an unknown continuation of the cave. All that is needed now are volunteers to dig the surface collapse to uncover this new cave. It is an easy surface dig in earth with just a few rocks.
A new era of cave detection has arrived!