Sharp Island lies on the margin of the ancient Sai Kung caldera. It is the perfect place to learn about igneous rocks, as the island is rich in various typical igneous rocks, such as volcanic breccia, quartz monzonite and rhyolite. On the Sharp Island Geo Trail, visitors can appreciate these rocks and understand their connection with the volcanic activities in Sai Kung more than 140 million years ago with reference to the interpretation signs. Sharp Island has basic countryside facilities. The geo trail is essentially a natural path and is suitable for general countryside visitors. Before crossing the tombolo, visitors are advised to check the time of high and low tides.
- Tombolo is accessible when tidal level is lower than 1.4 meter.
- Visitors should note the tidal levels before crossing the tombolo.
- Please refer to Hong Kong Observatory for tidal information.
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