Higgins Mountain Preserve, managed by the Kennebec Estuary Land Trust, is one of the highest points on Georgetown Island, with an elevation of 259 feet above sea level. The lower slopes of the mountain are dominated by red oak, maple, and birch, creating habitat for warblers, woodpeckers, and owls. Pitch pine and blueberries grow on the upper slopes, and rare broom crowberry, a low growing shrub, is found in the shallow soils between rocky outcrops at the summit. Deer, fox, and racoon forage on the land.