Also known as Cave of the Banshee, Gua Langsir is located at Pulau Dayang Bunting. Home to thousands of bats, it is 91 meters high and is so named because of the echo of the wind through the cave. Like all other attractions in Langkawi, this cave also comes with its own set of tales and legends, especially pertaining to the wailing sound. However, Gua Langsir is only recommended to cave explorers with mountain climbing experience and equipment. You can get there via speedboat from Kuah Jetty.