No trails involved but you have the right place.
To put you all out of my misery; I’ll take the blame on this one....
https://m.imdb.com/title/tt0690436/
MS: “ An episode of RT 66 was shot here at Mount Snow in the early 60’s. The storyline was Tod and Linc are employed at the Snow Lake Lodge and there is a love twist, of course.” There may be a pic in the ground floor at the Grand Summit.
Wiki: "Route 66 is one of few series in the history of television to be filmed entirely on the road. This was done at a time when the United States was much less homogeneous than it is now. People, their accents, livelihoods, ethnic backgrounds, and attitudes varied widely from one location to the next." The list of guest stars during the series run who went on to bigger things is amazing.
A different episode was filmed in Newfane, VT. Another ski episode was at Squaw Valley where they worked, go figure, at Squaw Valley Ski Lodge.
https://imdb.com/title/tt0690423/ I wonder how well that Corvette handled those mountain roads and ski equipment?