Jon Glassberg Jon Glassberg spent the first two decades of his life as a pro climber, traveling the world. His focus these days is on directing and his growing company: Louder Than Eleven. Contributor to These Books Course Textbook Gym Climbing by Matt Burbach $24.95
Jon Glassberg Jon Glassberg spent the first two decades of his life as a pro climber, traveling the world. His focus these days is on directing and his growing company: Louder Than Eleven. Contributor to These Books Course Textbook Gym Climbing by Matt Burbach $24.95
