Your knees might buckle. Your abs might burn the next day. And it might be a little scary. That all comes with the terrain at Tree Top Sacramento by Kletterwald, a rope-based obstacle course opening ...

Bryan Hendrickson, a general foreman for K.C. Arborist Tree Care, supports nearly all of his weight with a rope (left) while using a chain saw Friday to trim a branch hanging over the roof of a house ...