humble3d Posted October 29, 2016 Share Posted October 29, 2016 Happy and safe Halloween Sinkholes Buried Alive The catastrophic collapse of the ground beneath our feet is a growing worldwide hazard... http://www.pbs.org/video/2365411270/? Utm_source=youtube&utm_medium=pbsofficial&utm_campaign =nova_covefullprogram https://www.youtube.com/watch?v=66t1kKm5Dk0 Link to comment Share on other sites More sharing options...
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