Ryūsendō is one of Japan's three largest limestone caverns. It is located in the town of Iwaizumi, Iwate Prefecture, in the Tōhoku region of northern Japan. Wikipedia
/141.7969751358,39.860110126709,9/397x132?access_token=pk.eyJ1IjoiamFwYW50cmF2ZWxtYXBzIiwiYSI6ImNqbXBtOXYxbDB5Z3ozbHFrazJuYWMwOGYifQ.v15fy_mcFWtgopmz8PhwqA)
