Our planet is speaking to us, if we would just stop and listen, says Trevor Cox, an acoustic engineer at the University of Salford in England.
Sonic Adventure
1
The stalacpipe organ in Luray Caverns in Virginia pounds stalactites with electronically-controlled rubber mallets to produce its music. (Trevor Cox)
2
The World War II abandoned oil storage tanks in Inchindown, Scotland was the test site for the world’s longest echo. (RCAHMS)
3
A spot under archways at Grand Central Station in New York reflects the sound from the walls to the opposite side of the underpass and is called the Whispering Gallery.
4
The Mayan Pyramid at Chichen Itza, Mexico creates a chirp like the sacred quetzal bird if you clap your hands while descending the stairs.