The second zone is the wooded area in the middle of the park called the Ravine, and contains the headwaters of the park's watercourse. In this zone, on the northeast side of the park, there are several points of interest: the Vale of Cashmere, the Rose Garden, the Zucker Natural Exploration Area, and the Prospect Park Zoo. The area contains the Nethermead Arch, an elaborate triple-span bridge. Quaker Hill and the Friends Cemetery are located near the southwest boundary of Prospect Park. Lookout Hill, as well as a large open space called the Nethermead, are located to the south and east of Quaker Hill, respectively. The Ravine also contains the Midwood, an old-growth forest incorporated into Prospect Park during its construction.