Ключевые слова: architecture, concrete, concrete wall, construction, corridor, czech railway, deep, equipment, excavation, excavator, heavy equipment, hydraulic, illuminated tunnel, industrial, industrial building, industry, infrastructure development, inside tube, inside tunnel, long tunnel, machine, machinery, modern railway, mud, puddle of water, rail, railroad tunnel, round, subway, technology, transport infrastructure, transport structure, transportation, underground, yellow and gray,