barrier cliff crumble danger dangerous drop edge England fall fence hole pit post quarry sand cliff sandstone sign warning warning sign work works coast english Great Britain Seaford Sussex top wooden chalk disobey disregard Downs folly fool idiot ignore safety sheer south steep summer tourism tourist advice alert appropriate-behavior appropriate-behaviour be-careful beware care careful caution cliffside colors colours communicate communication concern deterioration fading-sign falling information informing light lookout observant restricted restriction restrictions risk risks risky river riverside shadows shapes shrubs signs sunlight textures trees warning-sign watch watch-out water bilingual black board close close-up closeup erosion free french graphic green hazard hazardous icon image message object photo photograph pictogram pictograph picture red resource signage signal slip slippery slipping somadjinn stock symbol texture trip tripping UP white gray grey rock rocky signboard stone triangle chute comic comical figure forbidden funny prohibit rectangle rectangular signpost stick