Ключевые слова: canyon, cliff, construction, digging, earth, ecology, environment, excavation, excavator, extraction, geology, granite, gravel, heavy, industrial, industry, landscape, large, machine, machinery, material, mine, mineral, mining, mining quarry, mountain, natural, nature, open, outdoor, pit, quarries stone, quarry, quarrying, raw, rock, rock quarries, stone, stone industry, stone quarry, work,