Timber Rattlesnakes- has anyone seen one in the wild?

[Reticsrule]

i went up to a cabin(near Somerset PA) in the appalacian(sp?) mountains this weekend and i was out herping the whole time. i always thought that rattlers lived and made their dens in huge boulders. so im out in the woods and there were these boulders(some 10 feet tall) with tons of crevices and holes everywhere in them. and it seemed like there were hundreds of them. i searched these things for hours and found not one sign of a rattlesnake. the cabin is in a pretty remote area with just a few cabins around and tons of other snakes. i know that timber rattlesnakes are endangered but cmon this place was PERFECT. i was talking to a guy and he asked me if i had found a rattler yet. if he said that it must mean that theyre in that area right? so, why didnt i find one even after hours of searching this PERFECT area?(im probably going up to the cabin again in august so if you have any tips on finding rattlesnakes let me know) thanks!