History & local legend
Ringing Rocks County Park near Upper Black Eddy contains a field of boulders that can produce a surprisingly metallic sound. Some ring like bells when struck, while others give a much duller response. The effect varies from stone to stone across the same rocky landscape.
The boulders are diabase, an igneous rock formed from ancient magma and later exposed through weathering. Their sound is a natural feature of the rock field, even though it can seem out of place: a solid-looking stone responds more like a piece of metal than an ordinary boulder.
Different stones produce different notes when struck.
