old rusty vintage forgotten german sign in forest translation wasser schutzgebiet means water reserve

area attention biologically biotope blue caution clean conservation danger drinking ecosystem environment environmental forest forgotten frosty german germany goods green groundwater hoarfrost icecrystals nature observe orange pollution portection preserve protect protection pure quality reserve rime rusty season sign symbol thoroughfare transport tree twigs vintage wasserschutzgebiet water waterconservationarea waterprotectionarea white