The main secondary dunes include blowouts, parabolic dunes, and transgressive dunefields (Figures 2 and 3). Note, however, that parabolic and transgressive dunefield dune types may also occur ...

Sea-level rise is threatening San Francisco’s shores. In February, the city began vegetating the sand dunes as part of its ...

Inland, sand dunes rise almost 200 feet in a series of ridges, blowouts and valleys, while wetlands fill depressions between dune ridges. The park is home to over 1,100 flowering plant species and ...