The Gruta de las Maravillas (Cavern of Marvels), located in the centre of the village, is a spectacular network of caves and tunnels which reaches more than 100m underground. The limestone ceilings are remarkably beautiful reflected in the waters of extraordinary interior lakes. God's Crystalware Chamber, where the reflections of light create a wonderful effect, is a highlight. On-site there is also the Aracena Interpretation Centre and geo-mining office.