All wires run underground, so nothing marred the view.

My telephone is connected to a switch immediately across the street and the wires run underground.

The aqueduct ran underground for nearly all of its length.

The water must run underground from this place; they had seen this happen before.

A fifth of the lines will run underground.

The line runs underground, apart from a few stations at surface level.

Just a few more structural details: the wires in town run underground, so they are out of sight.

There you'll find a secret glimpse of the small tributary that runs underground the city.

Lines from the sensors ran underground, to an alarm box in one of the kitchen cupboards.

The tram line would run underground in the future.