Dye tracing, more like DRY tracing — Divining the Perryfoot Valley
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Over the past two weeks I've been down P8 for a hydrogeological quest on behalf of John Gunn (BCRA), Viktoria Nemeth (MUSC) and Liam Kelly (dirty non-caver). What started as a simple dye trace from P3 (Gautries) to upstream Sump B in P8 (Jackpot) ballooned into an exciting whistle-stop tour...