pacific northwest, deep in the heart of the primeval forest, a giant is waiting. no, not a yeti. no, not the sasquatch. this giant actually exists, and he is easy to find. why? because this giant towers above all others and stands in the same place all the time. they call it a chinquapin. today with the help of these fine gentlemen, we are not only going to find this giant living among us, we are going to climb it. basically you are going to take us to a high tree and climb the tree. why? >> because we are going to measure it. >> why are we measuring? >> we're going to see if it's still the champ. >> they want to see the overall health of the forest. to do that, they constantly check on the