Illuminated Stalactites

Makido Cave in Niimi, Okayama, is a 450-meter-long limestone cavern renowned for its illuminated stalactites, rimstone formations, and an underground lake crossed by the vivid red Ryugu Bridge. The cave maintains a constant temperature of approximately 15°C, offering a cool retreat in summer and a warm haven in winter. Highlights include the Senmaida (terraced rimstone pools), the heart-shaped Lovers’ Spring, a designated "Lovers' Sanctuary".