Pegasus Administrator Staff member Nov 30, 2016 #1 Does anyone know any more about this?? http://www.presstv.ir/Detail/2016/11/26/495183/Largest-pit-cave-cluster-sinkholes-northwest-China
Does anyone know any more about this?? http://www.presstv.ir/Detail/2016/11/26/495183/Largest-pit-cave-cluster-sinkholes-northwest-China