Two winters ago, I was busy cutting my marten trapping trail through miles of burnt timber. Normal trail cutting is exhausting, but burnt timber is worse. Literally every step is impeded by fallen trees, and in three-feet-deep snow, clearing a path wide enough for a snow machine is a very long, slow process. This story occurred in the middle of a cold snap, with the temperature at a less-than-balmy -30F. I had been cutting trail all day, had reached the end of my seven-mile-long line, and was headed back to the truck at about 3:00 p.m. I was sweaty and exhausted, a bad combination as darkness was quickly setting in, and I could feel the temperature dropping even more.