Take some time away from the heat of the day in the eerie, underground caverns of the Cueva Can Marça in Puerto de San Miguel. Spookily silent and illuminated in strange colours, the formations of stalagmites and stalactites make for a Jurassic backdrop to the tour of the cavernous galleries.
Originally used by smugglers to store contraband, the marks they used to guide them in the dead of night can still be seen on the walls. At the heart is a spectacular music and light show with a 10 metre cascade of water. Visitors also get to see the magnificent views out to sea from openings hewn into the cliff side.
https://www.ibiza-spotlight.com/activity/can-marca-caves