appropriate behavior appropriate behaviour direction environment health health risk no spitting not allowed not permitted penalties permission denied pollution prohibited prohibition sign spit spitting unhealthy warning alert appropriate-behavior appropriate-behaviour expectorate expectorating health-risk historic-sign no-spitting not-allowed not-permitted old permission-denied railway-platform metal nail pattern pike point shine spike steel stud texture bamboo barbecue brochette brown bundle grill isolated kebab pointed skewer stick wood beach Chesil Beach coastline England english gravel Great Britain promontory sea shingle shore stone abstract closeup dew flower leaf leafs nature plant plants saavem sepal sepals white blue cliff coast isthmus land landscape mediterranean natural rock Sardinia shoreline view green purple black daisy drop humidity water