Megafauna Extinction Simulator 2016
Each square represents about a 5km by 5km area.
The total area is about 250 000 square kilometers.
The colour represents the number of megafauna, which in ideal conditions are around 20 per square.
Each human group represents a band of about 30 people.
From population estimates an area this size could support about 50 000 people, or about 1600 groups.