The Yukon lay a mile wide and hidden under three feet of ice. On top of this ice were as many feet of snow. It
was all pure white, rolling in gentle undulations where
the ice jams of the freeze-up had formed. North and
south, as far as his eye could see, it was unbroken
white, save for a dark hairline that curved and twisted
from around the spruce-covered island to the south, and
that curved and twisted away into the north, where it
disappeared behind another spruce-covered island.
-"To Build a Fire,"
Jack London
Which facts about the Yukon gold rush connect to the
ideas in this excerpt from "To Build a Fire"? Check all
that