underground concrete drainage tunnel with flowing water and mounted ceiling lights
Keywords
tunnel,
drainage,
sewer,
water,
concrete,
pipe,
underground,
infrastructure,
industrial,
stream,
flow,
grooved,
interior,
wall,
ceiling,
light,
illumination,
darkness,
depth,
structure,
subterranean,
passage,
system,
utility,
facility,
moisture,
wet