In the south of Japan, Okinoerabujima is located in the southern part of the Amami archipelago. Surrounded by coral reefs, these islands with a granite subsoil of volcanic origin are part of the Amami Gunto National Park. Okinoerabujima is renowned for its geological treasures: it is home to over 300 limestone caves, an impressive underground network composed of pools, stalagtites, stalagmites, and kilometres of galleries. The island’s coast also offers idyllic panoramas: its immaculate beaches lined with crystal-clear water in shades of turquoise and cobalt are an invitation to daydream or to go snorkelling to discover the diversity of the exceptional underwater environment.