 There are a number of holes, sometimes directly beneath the sculptures, which are thought to have held candles or lamps which would have illuminated the carvings.In 2010, it was discovered that due to damp conditions in the cave insect larvae and worms were infesting and damaging the walls and carvings, and restoration works were initiated.In August 2014, it was reported that the work to remove the threat of the chalk-eating worms had been successful.