One of the coolest, most intriguing places I’ve ever visited is the Ringing Rocks Park in Bucks County, Pennsylvania. In this video you’ll see and hear that some of the rocks–but not all of them–emit musical notes when struck with a hammer. While I was there, another visitor worked out how to play “Happy Birthday” on the rocks.
There are not many of these sites. Ringing rocks are always found in boulder fields. If you break off a piece of one, it won’t ring anymore. There are all sorts of theories to account for this, but the long and short of it is, we don’t know why they ring. Why don’t they all sound the same? We don’t know that, either.
Secrets of nature–never let it be said that God is not a wildly inventive Creator.