gray or black gravel or crushed stone for road construction and reconstruction, poured with bitumen. preparation and laying of asphalt. textured background. construction industry. - 岩石 個照片及圖片檔黑色, 煤礦, 特寫
complete setting of the textures of the face of a smooth rock with stratum outdoors. spain - 岩石 個照片及圖片檔石頭, 背景 - 主題