cobblestones line the old rail tracks along the petaluma river

active activity bay bridge build california city cobble cobbles cobblestone cobblestones country danger dangerous diversion downtown flood floods grunge industrial industry level natural nature old overflow pattern patterns peace peaceful petaluma piling pilings rail railroad risk river road rock run scene scenery scenic serene serenity sonoma stone stones stream street structure structures texture textures track tracks traffic train tranquil tranquility urban usa victim water waterway west wet wine wineries winery