There's a subterranean river that goes underneath all the homes on this street.

As you cross the herringbone brick floors of its rooms, the sound of fast-flowing water gets louder until, in one of them, a spring from a subterranean river gushes out.

Subterranean river waters run through the main branch at times of flood.

Subterranean rivers can also be the result of covering over a river and/or diverting its flow into culverts, usually as part of urban development.

Subterranean rivers flow underground in caves or caverns.

Sometimes the link was a subterranean tunnel.

What did not pop out of that vast subterranean tunnel was supersymmetry, a key foundation of string theory.

There was a subterranean tunnel, which has now been filed in, which gave the camp safe access to a nearby spring for water.

They live in a subterranean tunnel and emerge at night to feed.

Riders complete a vertical loop, then enter a subterranean tunnel full of mist.

And in the cold of the winter nights it was also much warmer in the subterranean world.

She continues to present this weekly discussion show, and here looks at the subterranean world of tunnels, catacombs, geological fissures and diamond mines deep underground.

Descending a single flight opens up an extraordinary subterranean world.

And as well as access to the museum, tickets give entry to a subterranean world that has remained hidden from public view.

While depicting the expressions of anonymous crowds in the urban subterranean world, the narrator continuously mulls over movie scenes and bars of pop music.