A Sinkhole Opened Up In His Backyard. So He Climbed Inside. His Findings Are Baffling Scientists
Sink holes are fascinating occurrences in nature that happen when the ground beneath the surface gets washed away or weakened, and the surface then caves in to reveal a gaping Full Article »
Source : World Truth.TV http://ift.tt/2cSViUx
Source : World Truth.TV http://ift.tt/2cSViUx
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