Washing Soda Stalactite-Cave Pillar at Steve Spangler Science - 0 views
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Heather Kaiser on 19 May 12Washing Soda Stalactite-Cave Pillar - If you've ever ventured into a naturally formed cave, you probably saw pillars stretching from the ceiling to the floor. They're called stalactites and they take hundreds and thousands of years to form as precipitation drips from down from the cave's ...