The underground Kuanyin Cave is dedicated to Kuanyin and features a stalagmite wrapped with a red cape. Legend has it that during the Qing dynasty a fisherman became lost at sea and a fiery red light came down from the sky and led him to safety in the cave.
The fisherman believed the light to be the goddess Kuanyin and the stalagmite in the cape to resemble the form of the goddess. The cavern remains a sacred spot on the island and people come here from all over Taiwan to pay their respects.