Ключевые слова: alert, area, black, blocked, bold, caution, caution sign, danger, danger sign, falling, fence, fenced path, forest, gate, ground, hazard, hillside, information falling rocks, letters, limit, message, metal, nature, nature hazard, notice, outdoor, outdoor warning, park, park barrier, prevent, public, rocks, safety, safety alert, secure, sign, signage, stop, symbol, terrain, threat, tree, triangle, walking prohibited, warning, warning board, warning message, yellow, zone,