Near Oregon’s southeastern border with Idaho, miles from anything that could even generously be described as a city, is a small but well-maintained graveyard. It’s a peaceful place, as little disturbs the silence save for the gentle lowing of cows and the occasional fluttering of a magpie’s wings. It is here that the youngest member of the Lewis and Clark expedition is buried. The sweeping wilderness seems a fitting resting place for the young explorer. Nearly two centuries after his death, he is still bounded only by the vast western…