I'm mostly going for the snow. But, some amount of years ago (10+ years) I went up to the same mountains. This was a long time before I had ant farms.
My mom picked up a huge pine cone (the pine cones are huge, and the trees aren't that big...which is funny...as Redwood trees are massive and have tiny pine cones) and there was a colony of some type of Formica ant nesting in the pine cone. This was when there was snow all over, and they were mostly dormant (just moved really really slow)...and around December if I recall.
I'm hoping to find a pine cone with ants in it. Not sure how many pine cones I'll have to pick up, but it was easy last time to find them and I wasn't even looking. We only picked up one pine cone. Unless that was just luck.
I'll mostly be looking for Formica ants, as I don't do good with keeping Camponotus at all. And, I'll be looking for larger sized ants (so that pretty much means Formica ants), not small ants. I'll probably find Monomorium ergatogyna, but they are kind of too small for me. Tapinoma sessile I'll probably find too, but they don't tend to do good in captivity.
That is mostly if it snows that is, which looks really likely.
Edited by Vendayn, December 30 2014 - 12:30 AM.