High-altitude Death

Tonight was interesting, in a strange, bringing-up-memories kind of way. Around 4pm some people started banging on the door. Somebody had just fallen dead in their tracks on the Sliding Sands trail, near here, probably of a heart-attack. They needed to call in the emergency at the observatory because there wasn't a phone nearby. Some kind of death happens a few times a year or so here. Some older guy doing the down-the-mountain bike died just a few months ago too. Weird....