I was 14 when I first saw the impossible white spine of the Northern Rockies. Nothing in my life up to that point had prepared me for their immensity, having been raised in tidy, fenced farm country of southeastern Pennsylvania. I was drawn into these strange and magical mountains as a hound tracks fresh scent. I did not ask why, I just went. I would eventually traverse all 21 mountain ranges in the Greater Yellowstone Ecosystem, some numerous times, particularly its most mas