From publisher blurb:
In A Light on the Mountain it is 1943 and a group of brave Allied investigators are asked to attend the testing grounds at RAF Acaster Mablis. Their mission? To carry out a check on a group of scientists working on a revolutionary propulsion system that is nearing completion and is now ready for final testing.
However, all is not quite as it seems and the Investigators will soon be plunged into a thrilling adventure which takes them way beyond the narrow confines of their mission parameters, to confront monstrous foes, probe a dark conspiracy and explore a mystery as pitiless as the mountains themselves.
A Light on the Mountain is the first episode in Achtung! Cthulhu's Living Campaign, and it can be played as a standalone adventure in its own right, but it is also the first part of a series of free, linked adventures which will appear periodically, all leading toward our epic Forest of Fear campaign book.