Frozen Leviathan

The frozen body of a leviathan class creature is found somewhere in the world. At some point in the story Robin Goodall may have to use a Bioscanner to take a sample from this leviathan.

The body seems to have a fairly large amount of space dedicated to it, as evidenced by the "Frozen Creature Crevasse" card in the world design section of the developers' Favro board.