footpath through sand dunes between oso flaco lake and ocean. guadalupe-nipomo dunes national wildlife refuge, califonia

area beach birds blue boardwalk bridge califonia california clouds coast coastline dunes environment fauna flaco flora footpath grass grassland guadalupe guadalupenipomo highway hiking lake landscape national nature ocean oceano oso park pier places plants point refuge reserve road rustic sand scenic sea sky state sunny trail travel trip vanishing view walk walking watching waves wild wildlife wooden