The Mountain Environment is a 1983 tabletop role-playing game supplement, written by J. Andrew Keith, with a cover by William H. Keith, for Traveller published by Gamelords.

[2] A companion adventure, Ascent To Anekthor was written by the same author.

The only times I have been able to use this are in crash situations or when small climbs are needed, usually skulking around doing a dirty deed.

[1] Watson commented that "The tight focus and elaborate detail of these supplements is both their strength and weakness.

Just about all aspects of mountain and undersea environments are covered, but I wonder just how much of this material is really going to make its way into the average adventure.