Part of slate quarry complex (NPRN 402787). A cut channel, 1 m across, 0.4 m deep, assumed to have redirected water from a stream around the north eastern edge of the quarry complex between SH 62610 09212 and SH 62675 09157, now dry. Methodology: 30 m transect survey. Positional accuracy: less than 10 m. Tolerance of accuracy: +/- 5m. K. Laws, EAS Ltd, 22/11/2007.