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crater

  1. catsmate

    Gateway of the Underworld

    The Batagaika Crater (near the Batagaika river, by a town named Batagai in the Verkhoyansky region of Siberia) started forming about 25 years ago but rapidly increased in size after local flooding in 2008. It's now about 1,500m long and over 120m deep in places (and growing at about 15-20m per...
  2. mhaze

    Aristarchus crater, radioactive?

    Aristarches crater, visible with the eye, upper right quadrant of full moon. Radon-222 has been detected a couple times there. It has a half life of just a couple days and is a known byproduct of U238 decay. Now, how does this make sense? There are known to have been "natural nuclear...
  3. leftysergeant

    Flt 93 crater was not unique

    It seems that Flt 93 was not the only aircraft ever to dig such a crater as that in the field at Shanksville. United Airlines Flight 585 did pretty much the same thing, at a much lower speed, in Colorada Springs in 1991. http://www.airdisaster.com/special/special-ua585.shtml

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