This is a view of the Moose Exhibit from a boardwalk that overlooks the 40,000 gallon Moose Lake. While portions of the exhibit aren't visible, the exhibit is about an acre. The Moose actually can access the lake all the way up to the boardwalk.
This is an outstanding moose exhibit, and while it is one of the oldest sections of the revamped Columbus Zoo I think that the North American area is still top notch. Having such a large lake in the moose enclosure is terrific to see.