Phra Nang Cave is deeply rooted in local Thai folklore. According to legend, the cave is named after a mythical princess or "Phra Nang" who waited for her lost fisherman husband to return. Some stories claim she died in the cave, while others say she became a spirit watching over the bay. Local fishermen still come here to leave offerings—flowers, incense, and symbolic phallic statues—as a plea for protection and good luck. The shrine reflects Thailand's blend of spirituality, mythology, and superstition. Despite its quirky appearance to outsiders, the cave holds genuine cultural value and is treated with respect by locals.

Over the years, Phra Nang Cave has become a major tourist attraction, not just for its folklore but also for the surrounding natural beauty. The nearby Phra Nang Beach is one of the most stunning in Krabi, framed by towering limestone cliffs ideal for rock climbing. While tourism has grown, efforts are in place to preserve the site’s spiritual essence. Visitors are encouraged to respect the shrine and avoid disrupting the natural surroundings. Today, Phra Nang Cave represents a unique harmony of culture, belief, and eco-tourism—offering a chance to explore Krabi’s legends while soaking in its scenic charm.