Timbered shaft was an alternative route into the cave, joining the rest of the system at depth. This entrance is currently run in. Very limited parking, probably best to park in the village and walk up.
See the DCA website for competition details.
Some of the squeezes in the cave are very tight and awkward, or through poised boulders. The big pitch (Deep Space) and the streamway (Peristalsis) may quickly become impassable in wet weather.