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Underground structures

underground structure

tube interior structure

black metal framed glass window

an empty parking garage with a red floor

horizontal building contractor beard

gray concrete tunnel with light

red and white National Schalter wall component on green wall

yellow electric train in station

grayscale photo of escalator

Young lazy bearded worker in vest, with helmet on head standing inside of building in construction process and hanging on social media.

low angle photography of Underground post in front of tower clock

Attractive bearded supervisor in vest, with helmet standing inside of underground parking lot in construction process and looking at wristwatch. Workers have to be on time for work.

stainless steel pipe on gray concrete floor

gray concrete tunnel with light

Metal tunnel grating with bright light at the end

person walking near stairs

time-laps photography of blue and white train

an empty parking garage with a red floor

horizontal building contractor beard

Young smiling bearded construction worker standing in underground garage in construction process and using smart phone for texting. It’s break time.

red and white National Schalter wall component on green wall

grayscale photo of escalator

low angle photography of Underground post in front of tower clock

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