A piece of rock ten kilometers wide would unleash a force equal to a billion megatons. The devastation it would have on our earth is unfathomable. However, there Is evidence that such an apocalypse has happened before. Scientists have found this evidence in an area in the Yucatan peninsula.Buried a mile beneath the surface they found a symmetrical ring of highly magnetic material more than a mile across. This event is widely believed to have brought an end to the dinosaurs. The impact could have blasted tons of sulfur-rich rock and dust into the atmosphere, encircling the earth. This burning debris would rain down on earth resulting in darkened skies for months or years.

Such an impact would impact with such force that shock waves could cause volcanoes to erupt with rivers of lava while sending seismic waves throughout the globe resulting in devastating earthquakes. 

Many scientists believe that the question is not "if" but "when".  The survival of the worlds species will depend on how big the rock is and where it hits.

Order your copy of "Denver D.C." and find out what survivors found once the darkness relinquished it hold on the earth.