Check this out. http://www.hollowearththeory.com/articles/hollowEarthHistory...
The "Complete Shell Hollow Earth" theory answers many questions.
Why is it that no one questions that "planets" must be other "gas giants" or "solid with molten core"?
In May 24, 1970, the former USSR started an ambitious drilling project whose goal was to penetrate the Mohorovičić discontinuity or “Moho”, the part where the Earth’s crust and mantle intermingle. The project is known as the Kola Superdeep Borehole (KSDB-3) located in Kola Peninsula, Russia. Several boreholes were drilled by branching from the central hole but the deepest, SG-3, a hole about nine inches wide reached a final depth of 12,261 m (40,230 ft) in 1989, and still remains the deepest hole ever drilled until today. The drill was halted due to the higher than expected temperatures at this depth and location, 180 °C (356 °F) instead of the expected 100 °C (212 °F) and drilling deeper was deemed unfeasible the reason the drilling was finally stopped in 1994, about 2.7 kilometers (1.7 miles) short of its 15,000-meter goal. The site was able to share many surprising information about what lies beneath the Earth’s surface and is still scientifically useful until today as research still continues.
Read more: http://scienceray.com/earth-sciences/physical-geography/bott...
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