Please use headphones to fully experience this soundwalk
Why do I need headphones to listen to underground sound?

Many underground sounds are low frequency, or low pitch which are perfectly audible for our ears. Phones, earbuds, and desktop computers often do not have the capacity to play these lower frequencies. Headphones or good speakers do have the correct frequency range for underground sound.

What is Prospect Park

Learn more at here.

Can I do the soundwalk online rather than in person at Prospect Park?

Yes, you can do the soundwalk remotely. But if you are able to visit Prospect Park, we highly recommend experiencing the soundwalk in person.

What kinds of microphones were used?

The recordings for the Underground Sound Project were captured with contact microphones, geophones and hydrophones. Due to the experimental nature of this work, some of the microphones were purpose built for this project.

What do we know about underground sound?

The underground is referred to by some as a "black box". Researchers are still uncovering the complex relationships between living and non-living entities underground, and the study of underground sound has yet to be fully explored. We do know that some trees, plants and animals use vibration (sound) to their advantage. For example, trees grow roots in the direction of nutrients but also towards the vibrations given off by moving water. Much is yet to be learned about this exciting underground world!

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