The planation surface of the southwestern peninsula dips gently into the Atlantic (911). Inland, extensive barrens are mainly confined to granite outcrops (District 440). Richer soils and more vigorous tree growth are found on the schists in Unit 411 than on the impoverished soils derived from the quartzite tills of Unit 412. At the coast (District 830) the forest grows on a varied landscape of drumlins and tidal marshes which provide habitat for interesting and rich flora and fauna.