Red color represents permanent Finno-Ugric residence, while slashed red areas represent the hunting and trapping areas they controlled. While riding on a sledge going west, he fell asleep for to take his rest. And perhaps dreaming about some lotus land where he can be safe, and nobody will ever come to take his land away again. Yes, lotus land, that island where the lotus grows, which captures unsuspecting travellers who might just try to taste it. They will never want to go home again.
Dreams are like time machines sometime.
It's nature's way of giving us what we want without actually giving it to us. To whisk us away from an intolerable existance to another time and place. It is the Bjarmlander's secret of survival in extreme loneliness and hardship of the north. His temporary escape, adaptation to his environment. The principle of natural parsimony in action.