The waters of this placid subterranean lake are the brightest, loveliest blue that can be imagined.

To the north there's a subterranean lake with More water than the oil deposits to the south.

Miles wide, its lower perimeter was a series of rocky shores running down to a clear-water subterranean lake.

The Balrog, whose fire had been quenched in a subterranean lake, burst into renewed flame.

They cross a subterranean lake to his secret lair beneath the Opéra house.

The cave is particularly noted for its chain of over 45 subterranean lakes of emerald green water.

Meanwhile the bottle was floating down to the deepest subterranean lake.

Then he was at the subterranean lake.

"They say it has a subterranean lake at the bottom of the shaft."

Tom found a subterranean lake, shortly, which stretched its dim length away until its shape was lost in the shadows.