https://www.pcgamer.com/fallout-4-mod-northern-springs-introduces-snowbound-new-landmass-to-explore/

Winter has come to the Commonwealth in the form of Northern Springs, a vast new content mod for Fallout 4 that claims to be larger than both its official expansions – Far Harbor and Nuka World.

Developed by a team known as Modular Illusion, Northern Springs is a snowbound landmass located to the North West of Fallout 4’s Commonwealth. The mod’s main designer, Jshrapnelc, states that it adds over fifty new locations to explore. This includes three buildable settlements, two player homes, a whole raft of new weapons and equipment, and, er, one ghost.