Yaeyama Limestone Cave, located on Ishigaki Island in Okinawa, Japan, is a cool spot to explore if you're into caves and nature. It's the OG cave on the block, opened way before its more famous neighbor. With well-lit trails, stalactites, and stalagmites, it's a fun adventure through the rainforest. Plus, there are some other smaller caves nearby that you can check out too. Just watch out for the "Cave War" drama between this cave and its rival down the road!