Devil's Island - Kauai Island

On the Hawaiian Islands, a state of America, 120km from Honolulu has a small island called Kauai Island, as beautiful as a green pearl mounted on the blue sea. The beach on the island has a sand hill of 18m high on the sea, all clean white sand. When walking on white sand, sand will make a sound like a barking dog. If running on the sand, the noise sounded more like thunder. Why is that? It is presumed that below the sandy hill there is water, between sand and water is a resonant cavity formed by steam and air. The sound reflected and refracted many times to create resonances that made the sound amplified into a loud rumble.

Not far from the sand hill, there is a black rock beach by lava. Lava is invaded by seawater into many small caves. in it there was a vented hole like a spouting stream, spraying white foam water. Each time the spray came back, it sounded like a whale spraying water. After a few small sprays is a big spray, water foam up to 20m, looks very beautiful.

Kauai Island is amazing scenery. Sitting on a car traveling along a stream, you will see a smooth park. The sky after ever rain rainbow also appears, sometimes 5-6 rainbows appear, sometimes 2 rainbows overlap. The northeast corner of Mount Waialeale has the largest annual average rainfall in the world, reaching 11,684mm. Even more amazing is Waialeale's southwestern slope with only 460mm of rainfall.