CCNF15: Clear Creek North Forest #15, otherwise known as the last tree. After three summers of field work and countless hours spent hiking to various study sites situated in the Kluane Region of the Yukon, Katherine finally takes the last tree core she will need to complete her project analyzing alpine vegetation dynamics. Using an increment borer to drill a small hole near the base of each tree, Katherine extracts a core which we store inside straws until returning to the lab. The annual growth rings along each core can be measured to gather information on growth and climate.