The great spring, he declared, was actually a subterranean river, fed by other underground streams.

The mushrooms grew thickly by the bank of the subterranean river.

"There can be no doubt; a subterranean river is flowing around us."

She envisioned huge subterranean rivers of hot water running a few hundred meters under the ground.

None other than our poor servant who had been sucked down two days before in the waters of the subterranean river.

The "bottom level is 3150 m long" including a subterranean river.

This is a kind of subterranean river that carries wastes away.

A subterranean river is a river which flows under the surface of the earth.

And beneath these streams was the subterranean river of pornography.

The main cavity is around 5 m high and contains a subterranean river.