area berlin conservation area directions environment environmental protection forest german germany integral nature reserve landscape nature nature protection area nature-sanctuary owl pictogram preserve area protected area protection reserve sign trees wooden sign birch birch forest birch tree haunted forest protective area recreation area spring spring forest tree wood woodland alert car care concern prevent prevention protect red risk risk area risky safeguard security theft risk vehicle warning warning sign white barbecue BarBQ clearing community grass grassed area open oval picnic area provision public public area recreation recreational seats shade shadows shelter sports field sunlight sunshine table vegetation active activities children children’s-playground climbing clourful colorful equipment families fun grassed-area greenery lawns leisure park picnic-area play playground playing public-area seating shelters tables undercover bins bush bushland gravel gravelled rocks rubbish bins shrubbery water tank access denied communicating communication denied denying access denying entry directive forbidden informing multi-lingual not allowed not permitted permission denied prohibited prohibition protected restricted restricted area secure serious stop azure blue cascades croatia dams flow green lake lakes landcape moss mountains national park Plitvice stones summer water waterfall