집중호우 때마다 맨홀 막히는 이유, 하수구 아래 가득 찬 이것 때문에 물 빠질 구멍이 없다. 맨홀 안 오물과 퇴적물 제거하는 과정｜극한직업｜#골라듄다큐

Every monsoon season, Korea’s cities face dangerous flooding when manholes clog and water has nowhere to go. The cause lies beneath our feet — layers of waste and sediment packed inside narrow sewer lines. To prevent disaster, sewer workers crawl through pipes barely 80cm wide, enduring suffocating heat, stifling humidity, and overwhelming stench. These unsung heroes remove the hidden blockages that threaten urban safety. Their work is not just maintenance but a lifeline that keeps the city alive during extreme weather. Follow their battle in the underground tunnels where survival depends on grit, endurance, and teamwork. #PICKDOCU #ExtremeJobs #SewerWorkers #FloodPrevention #UrbanSafety #Monsoon #ClimateChange #Infrastructure #Documentary #Korea