My pack, heavy with rocks, dug into my back as I hiked across the uneven ground twenty miles (32 kilometers) from the Arctic Circle.-- Midnight Sun, Arctic Moon: Exploring the Wild Heart of Alaska by Mary Albanes (see trailer here).
Thanks go to intrepid book publicist, Mary Bisbee-Beek, for getting me a copy of this one. It would be a great choice for the Memorable Memoirs challenge.