There are many definitions for a zip line canopy tour out there. Here's a glimpse into the ultimate tree top zip line adventure known as Timberline Adventures in the Coeur d'Alene/Spokane Area. (Participants must be 7 years or older). We start off by taking you on a fun four-wheel adventure to the top of the mountain and once you take that first step onto our beautifully constructed tour, your feet won't touch the ground for the next 2 1/2 hours. Explore New Heights!