- 1h
- 10m
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Beside the underground river
Follow a dark river into the rock with this underground river cave, which plays free of charge in your browser. The water rushes between pale stones, and stalactites hang from the roof.
The river roars over the rocks, and the sound rolls off the walls and comes back from every side. Thin streams trickle down the wet stone and patter into small pools. Drops fall from high above and land with round, echoing plops.
Then a group of bats sweeps just over your head in a flurry of soft wings and tiny squeaks, and you duck. High under the roof, more bats stir and settle again. A loose stone drops into the river with a sharp splash. At the edge, an eddy gurgles against the rocks, and the roar wraps around you like a blanket.
If the bats startle you, pick Without the bats. For the rushing water alone, choose River only.
What you hear by the underground river
- River rushing through the cave: A strong river rushes over rocks through the huge, dark cave, a full roar that echoes off the walls. Plays all the time.
- Water running down the walls: Water runs in thin threads down the wet cave wall and splashes into little rock pools. Plays all the time.
- Bats fluttering past: A small group of bats flutters past close overhead, with quick, leathery wingbeats and tiny squeaks. Plays at random moments, about 3 times every 10 minutes.
- Bats stirring under the roof: Bats wake high under the roof with a rustle of wings, thin squeaks, and a short burst of fluttering. Plays at random moments, about 3 times every 10 minutes.
- Stone falling into the river: A stone breaks off the wall and smacks into the fast water, with a rattle of grit. Plays at random moments, about once every 10 minutes.
- Eddy swirling among rocks: Water swirls in a rocky eddy at the river's edge, with deep, round glugs and slaps against the stone. Plays at random moments, about 3 times every 10 minutes.
- Drop into a deep pool: A single drop falls into a deep pool, and its round plop echoes through the cave. Plays at random moments, about 3 times every 10 minutes.
- Drops from the cave roof: Drops fall from the stalactites on the roof and splash on the rocks below. Plays at random moments, about 3 times every 10 minutes.
How to mix an atmosphere, keep your own version or download it: questions and answers.