The Mammoth Steppe is a vast stretch of grassland covering the Canadian Yukon, Siberia, Northern China and everywhere in between. It first appeared in the Pleistocene but disappeared with the melting of the ice age, but it appears once again in the Neocene Ice Age. It is just south of the Arctic Sea and north of the Indo-chinese Forests. Very little snow ever touches the ground, and when it does it is only in the depths of winter. A great variety of grazing herbivores and large carnivores live here.