Slipstones is a fine crag in the little known valley of Colsterdale at the eastern edge of the Yorkshire Dales. The crag consists of a series of small buttresses which range in height from ten to thirty feet. The larger buttresses have some excellent short routes, while the smaller buttresses have some of the finest boulder problems in Yorkshire. The rock tends to be near-vertical, with technical climbing on small edges. The scenery is stunning, with fine views over Colsterdale. The crag faces southwest and catches the sun all day; ideal for sunny winter afternoons or summer evenings.