April 19, 2013: You can see one of the O-Line towers in this photo. The O-Line allows orangutans to brachiate above visitors' heads to the other orangutan habitat at Think Tank.
April 19, 2013: You can see one of the O-Line towers in this photo. The O-Line allows orangutans to brachiate above visitors\' heads to the other orangutan habitat at Think Tank.
