ROBBIE SHONE / SCIENCE PHOTO LIBRARY ROBBIE SHONE / SCIENCE PHOTO LIBRARY
Phytokarst rock formation. This type of karst rock formation is created in areas of limestone caves where sunlight is present. The rock is eaten away by bacteria, leaving behind sharp spikes that angle towards the daylight. Photographed in a cave in Gunung Mulu National Park, in Sarawak, the Malaysian part of the island of Borneo. Borneo has some of the largest cave systems in the world.
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