Camp Caldera, a non-profit arts-camp founded by Dan Wieden for underserved Oregon children, holds an annual fundraising event at the Wieden+Kennedy building in Portland. The key to the concept for this year’s event was the location—the basement. Using the basement and the camp as jumping-off points, the creative team at the Portland office focused their approach on a fantastical underground forest. The invitation and posters communicate this fantasy with an element of mystery that engages the audience as soon as the invitation is received in the mail.