Railay Rock TowerThis is one of the first rock formations to greet you on the longtail boat ride to Ton Sai.
Long, long ago in a hemisphere far, far away, sea creatures with carboniferous skeletons swam about in the ocean, living, playing and eating each other. The dead ones built up on the ocean floor where they were compacted into a sedimentary rock called limestone. Some millions of years later, when the underlying tectonic plates decided to move, the rock was thrust up above the ocean surface and sea became land. Rain falling on these newborn cliffs, being mildly acidic from CO2 in the air, percolated through the somewhat alkaline rock, dissolving and reshaping it in a manner not dissimilar to
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