An English adventurer hears about a Tibetan valley hidden behind a cloud of poisonous gas where a population of conjurors is said to live. He orders diving helmets to pass the poison gas and encounters a deadly peril, a peril so monstrous that it threatens to wipe out humanity... Der Violette Tod and other short horror stories. The stories are simple and easy to read, suitable for intermediate learners of German. This is the original unabridged version.