A neat adventure that could be run stand-alone but which is well-embedded into the area with lots going on - much of which could lead to further adventure - so works well as part of a campaign. If your adventures are not in Filbar, you may wish to amend a few names but it ought to be relatively easy to find a suitable location in your campaign world.
A plot hook is given - a spot of bounty-hunting - to get the party heading in the right direction, up into the mountains towards the remote settlement of Fargone. Whether they take that bait or have some other reason for going there, once they arrive there are good thumb-nail pen portraits of some notable inhabitants - plus, of course, plenty of notes for the DM about what is really going on!
As well as wandering monster encounters suitable to the mountain terrain, there are a tomb and a cave system to explore and some bandits to fight as well as resolving either the bounty hunting job (or at least, getting clues as to where next to go) or whatever other reason the party has for being there - plenty of action to keep the characters entertained. They ought also to be able to help the inhabitants of Fargone to reopen a mountain pass and renew trade links with a seaport on the far side of the mountains.
The adventure is supported by some basic maps and even a few photos of appropriate snowy scenes. It is a good, solid, traditional plot with hidden depths. Recommended!