Looks like this is the Geneva Basin Ski area. No idea if it's still active (there are certainly no lift towers or anything), but the name shows up on the old topos. I wonder if they intentionally spelled out SKI with the trails? Either way it's pretty entertaining.
"After the first glass, you see things as you wish they were. After the second, you see things as they are not. Finally, you see things as they really are, which is the most horrible thing in the world."
--Oscar Wilde on Absinthe