The ruin serves as a hideout for the Bat Fairies. There they keep the stolen crystals. The crystals bring light into the dark ruin. Through the holes in the rock wall of the ruin, decorated with transparent crystals, a flickering light appears that illuminates the ruin. The intensity of the light in the Bat Fairies ruin increases the more pieces of rock are replaced by transparent crystal pieces in the rock face! The light module requires 1 x 1.5 V micro battery (AAA). Dimensions: 40 x 14 x 32.5 cm (LxDxH)