what is the "expedition to the barrier peaks"?
A 1980 adventure module for the "Dungeons & Dragons" role-playing game.
Expedition to the Barrier Peaks
is a 1980 adventure module for the "Dungeons & Dragons" role-playing game 
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Expedition to the Barrier Peaks [SEP] Introduction
Expedition to the Barrier Peaks is a 1980 adventure module for the "Dungeons & Dragons" role-playing game written by Gary Gygax. While "Dungeons & Dragons" ("D&D") is typically a fantasy game, the adventure includes elements of science fiction, and thus belongs to the science fantasy genre. It takes place on a downed spaceship; the ship's crew has died of an unspecified disease, but functioning robots and strange creatures still inhabit the ship. The player characters fight monsters and robots, and gather the futuristic weapons and colored access cards that are necessary for advancing the story. "Expedition to the Barrier Peaks" was first played at the Origins II convention in 1976, where it was used to introduce "Dungeons & Dragons" players to the science fiction game "Metamorphosis Alpha".