The Rancid Geysers sit at the bottom of the mountain feet before the desert, they are smelly but amazingly fertile. The geysers sit with a large field around them that is filled with monoxide and it becomes a death plain for animals. This area is a prime place for larger and more willing scavengers. But in general great steppes and plain hills of thick grassland with low valleys fill the Rancid place, and there are even forests because of the great minerals in the soils.