Ключевые слова: alert, attention, background, caution, danger, dangerous, day, falling, forest, green, hazard, highland, highway, hills, information, landscape, mountains, nature, outdoor, outdoors, plans, risk, road, roadsign, roadway, rockfall, rocks, rockslide, safety, sign, signpost, stones, street, symbol, tourism, traffic, transportation, travel, tree, trees, triangle, trip, turn, view, warning, way,