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Of interest is the large cave known as Tham Saowapha which is said to extend over a kilometre into the limestone interior of the island. Another cave, the chimney-like Tham Chaprakong gives access to the view from the top of the hill. Other caves on the island are home to meditating hermits, so visitors should take care not to cause any disturbance. Many of the temples on the island also have caves used for worship which can be explored as long as you are being respectful.