The Poison Glen lyrics

Well now, its obviously a song about ancient nuclear war. You see, millions of years ago, people were cavemen. Aliens from several planets in outer space emigrated to earth & built a super civilization that was more modern than today's world. But, either the aliens started fighting amoung themselves, or with the earthlings & a nuclear war started. Whether it was a series of wars or one big, gut buster, we don't know. ! /3 of the aliens were anihilated, 1/3 went back into space, & 1/3 went underground, where they live to this day. Today, we have reinvented nuclear weapons again. Will history repeat itself again?