Ключевые слова: aerial, bird, blue, bucket, build, canyon, chalk, chalkquarry, clear, construct, day, deposit, dig, dirt, dragline, earth, earthmover, environmental, excavator, expand, eye, gravel, ground, hoist, industrial, industry, landscape, large, machinery, mining, mountain, natural, operate, pile, pit, pond, quarry, rock, scenery, sky, stone, summer, tranquil, vehicle, view, walking, water, work,