Enter the dangerous and precarious world of golf with this fantastic collection of the world's most difficult golf holes. Each month presents a mind-boggling and bizarre challenge sure to make you head straight to the 19th hole! Well known for offering premium quality calendars with exceptional full-color photography, Avalanche calendars are now even more eco-friendly and on-trend with the growing green movement. This calendar is printed with soy-based ink and the cover has an earth-friendly water-based coating. Size Closed: 12" W x 12" H. Size Opened: 12" W x 24" H. ISBN-13: 9781604346466. ISBN-10: 1604346469.