I read in National Geographic about an entirely Nepalese crew who summitted K2, the second highest peak in winter, which hadn't been done. I thought it was pretty cool because on virtually every climb, if not every climb, the guy holding the camera while smiling Westerners probably wave their flags is a Sherpa, who not only made the climb, but carried a disproportionate amount of gear and for the most part got very little credit for it. One of them actually did it without oxygen, although, I think that was reckless even for someone as well acclimated as he was. He was basically down to taking one or two steps and resting for a minute to get oxygen at the end.