Floating Photovoltaic Solar Plants: The main underground power cable installed with HDPE cable duct and flexible cable conduit to Floating Solar PV System.

March 3rd Slanic Romania, Unirea salt mine, main underground gallery

March 3rd Slanic Romania, Unirea salt mine, main underground gallery

March 3rd Slanic Romania, Unirea salt mine, main underground gallery ceiling

March 3rd Slanic Romania, Unirea salt mine, main underground gallery

March 3rd Slanic Romania, Unirea salt mine, main underground gallery ceiling

March 3rd Slanic Romania, Unirea salt mine, main underground gallery

March 3rd Slanic Romania, Unirea salt mine, main underground gallery

March 3rd Slanic Romania, Unirea salt mine, main underground gallery

March 3rd Slanic Romania, Unirea salt mine, main underground gallery

SEOUL, SOUTH KOREA - OCTOBER 27, 2022 Ewha Womans University main underground student lecture hall and library at dark night time

SEOUL, SOUTH KOREA - OCTOBER 27, 2022: Ewha Womans University main underground student lecture hall and library at dark night time

SEOUL, SOUTH KOREA - OCTOBER 27, 2022 Ewha Womans University main underground student lecture hall and library at dark night time

SEOUL, SOUTH KOREA - OCTOBER 27, 2022 Ewha Womans University main underground student lecture hall and library at dark night time

Repair of the heating main. The underground pipe through which steam flows is damaged

Repair of the heating main. The underground pipe through which steam flows is damaged

Repair of the heating main. The underground pipe through which steam flows is damaged

Repair of the heating main. The underground pipe through which steam flows is damaged

Repair of the heating main. The underground pipe through which steam flows is damaged

Repair of the heating main. The underground pipe through which steam flows is damaged

Montréal Palais des Congrès

Montréal Palais des Congrès

Montréal Palais des Congrès

Montréal Palais des Congrès inside

Montréal Palais des Congrès

Montréal Palais des Congrès sculpture

Montréal Palais des Congrès sculpture

Montréal Palais des Congrès entrance

Electrical riser signage

Electrical riser signage

City water service. 500mm water pipeline with valve.

City water service. 500mm water pipeline with valve.

City water service. 500mm water pipeline with valve.

Entrance to Pluto\'s Cave Lava Tube in California

High pressure gas warning sign

Taipei Main Railway Station Underground shopping mall Taiwan

Train and main section of the London Underground

Taipei Main Railway Station Underground shopping mall Taiwan

Commuters walking through Taipei Main Station underground concourse with directional signage to airport MRT and facilities

Worker repair pipe plumbing water main broken. Use shovel to dig a hole underground on the road