I know and I think I might have mentioned it before but shortly after I posted my accounts here of squatch a hiker went missing out in the cascade
range not too far out from the area. Not saying it was bigfoot but you never know.
Well to topic, it seems there is a theory on Bigfoot been using under-ground caves or passage ways to travel or as you said to "hibernate. There is
always sighting first, then a disappearance from the area on being searched by research group.
I believe that Big Foot does exist.Maybe it is because it may be in an underground cave system like you mentioned, but what if Big Foot is connected
to UFOs? Many people see UFOs and after, there are Big Foot sightings. Maybe it's because they go with UFOs? What do you guys think?