There have been a number of interesting theories advanced about life on Mars, but the intriguing picture of the world of Longtree and Channeljumper in its infinite variations, tonal and thematic. The Mars of these two is an old culture, old and finite.
The first ripples of blue fire touched Dio's men. Bolts of it fastened on gun-butts, and knuckles. Men screamed and fell. Jill cried out as he tore silver ornaments from her dress.
Hudson lay in his sleeping bag, staring at the sky. It bothered him a lot. There was not one familiar constellation, not one star that he could name with any certainty. This juggling of the stars, he thought, emphasized more than anything else in this ancient land the vast gulf of years which lay between him and the Earth where he had been-or would be-born.
He was tired of people--a "human interest" columnist, who specializes in glamorizations of the commonplace and sordid is likely to get that way. So. this starship seemed to offer the ideal escape from it all
They were two desperate scavengers in a no-man's land of radiation and death. Living in a kill or be killed world. Can they fin a new life and hope? A grim, grisly post-apocalypse story.