The man flung a look back along the way he had come. 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 detail gives the reader information about the location of the story? "The man flung a look back along the way he had come." "The Yukon lay a mile wide and hidden under three feet of ice." "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."