Thank you, Zorah, for your expertise. I respect Nigel's breadth of knowledge about the Dyatlov Pass Incident, but we're not in agreement on the cause of the group's death. He favors, I believe, a fatal release of nitric acid from a missile explosion. I and many others think a natural disaster or weather related phenomenon, or at least what the group believed was a disaster about to befall them, led to their terribly unprepared dash to the trees below. Your insights about orange colored skin, foam on the cheek and raised footprints help explain these mysteries as more naturally occurring. The cause of the group's death remains speculation, however, and probably always will.