Driving south from lot one you soon reach parking lot two, a small lot on the east side of the road with a boardwalk that crosses scrub and dune habitat to the beach and ocean. The boardwalk and lot are closed during the nesting season. The first section of the boardwalk climbs steeply to cross a vegetated dune. From the high point, there is an expansive view back over the Great Marsh. You can see into distant pans and estuaries, and you can often find raptors perched on the many staddles and other high points on the marsh. In winter this is a good spot to look for rough-legged hawks, snowy and short-eared owls, and other raptors. During spring and fall this boardwalk is a good spot to watch the phenomenon of migration; during the right conditions, a steady stream of small flocks of passerines may pass by almost within touching distance. The island is narrow at this spot and you have an almost uninterrupted view of the birds passing by.
From A Birders Guide to Parker River National Wildlife Refuge

Lot 2 is one of the six parking lots that provide access to the Parker River National Wildlife Refuge.

Located along the northeast coast of Massachusetts, Parker River National Wildlife Refuge was established in 1941 to provide a feeding, resting, and nesting habitat for migratory birds. Most commonly associated with Plum Island, a barrier beach island, the refuge is comprised of more than 4700 acres of diverse habitats including sandy beach and dune, cranberry bog, maritime forest and shrubland, and freshwater marsh. The most abundant habitat on the refuge is its 3,000+ acres of salt marsh, one of the most productive ecosystems in nature. Parker River provides a pristine coastal habitat for over 300 species of resident and migratory birds, as well as a large variety of mammals, insects, fish, reptiles, and amphibians. The refuge also provides critical habitat for the federally threatened piping plover.

In addition to its mission of wildlife conservation, the refuge provides a variety of excellent wildlife-dependent recreational activities, including surf fishing, wildlife observation and photography, a variety of interpretive programs, and seasonal waterfowl and deer hunting opportunities. A large visitor center, complete with a classroom and auditorium, msupports many of these public uses.

Parker River has achieved the following special designations: Western Hemispheric Shorebird Reserve Network (WHSRN), Important Bird Area (IBA), and Area of Critical Environmental Concern (ACEC).