The Reserve’s main nature trail runs across 5 different barrier island habitats. In the era of Howard Coffin’s ownership of the island, an earthen causeway was installed crossing through salt marsh on the west side of Dean Creek. The Nature Trail, which was created in the 1990s, used this established causeway as the path of least resistance when creating the nature trail, which runs all the way to Nanny Goat Beach. Now, the earthen causeway has suffered from increasingly frequent flooding, restricting access across the trail. In order to maintain access to the trail, as well as restore hydrologic flow through the marsh, the Reserve is replacing the causeway with an elevated boardwalk, and will replanting the impacted area with salt marsh vegetation.