An impressive work of nature, this warren of natural burrows into the coast 1km north of Canyamel. Pass through an unassuming fissure in the rock wall that buffers the coast and you'll find yourself in a soaring vestibule, walking along a raised footpath past the 'Queen of Columns', a 22-metre-tall stalagmite, and through rooms including the 'Chamber of Purgatory' and 'Chamber of Hell'. The 40-minute guided tours of the caves in English, German, Spanish and French leave every 30 minutes.
Even the walk to get here is spectacular – the caves are halfway up a sheer cliff face and once served as a refuge for the local inhabitants in times of war and invasion.