There’s an article at USA Today about the snow monkeys in Jigokudani, Nagano prefecture, Japan. With short pieces of text and plenty of pictures, you can get a good feel of how these little creatures live.
I think snow monkeys are the most commonly raised subject when people learn I’ve been to Japan; maybe it’s the fact they’re lower primates acting in a very human way that captures people’s imagination.
Unfortunately, I didn’t see go anywhere with snow monkeys during my visit in 2008 (and moreover, it was July, so we didn’t see a huge amount of snow*).
The story: Japan in Jan: Snow Monkeys
(*I say ‘not a huge amount’ because we did climb Mount Fuji and see some there).