Cave - Olly's Sucking Hole
Went to investigate this draughting orifice. Initial entrance climb is fine, if you chimney down on the R side. At the bottom, there are three ways on. The first one goes back under the entrance, down a boulder slope, to emerge in a large chamber "Cheesy dip". There are a number of small leads off, all choked. In the roof is lots of daylight, coming from 2001-046. Left from the entrance went down a loose slope (blowing). Right (Sucking) went along a bit. We decided to do some surveying. Which required red paint. Which was at the bivvi site. So we went and had a cup of tea for a bit. Came back with surveying gear and surveyed the LH route to a ~5m deep pit.