Janine Hernbrode: Rock Image Researcher
Peter Boyle: Behavioral Neuroscientist
Wednesday, January 29, 2025,
2:30pm – 3:30pm,
ASA Koffler Great Room and Zoom
Ms. Hernbrode and Dr. Boyle will discuss their research and the cultural insights about Hohokam petroglyph sites in Arizona which often contain boulders that produce a bell-like sound when struck as well as other intriguing sound phenomena. The largest recorded petroglyph site contains over 140 bell rocks that show clear evidence of use during pre-contact times. These bell rocks resonated at a wide range of frequencies spanning three musical octaves and are positioned so that musical interaction is possible. Additional research shows that some bell rocks are portable and that others were rubbed, not struck, to produce sound. It was also discovered that certain features in the landscape produce a megaphone-like amplification of sound. These sound amplifying boulders are all marked with similar imagery.
You can connect to Zoom either by using the following URL: https://zoom.us/j/95456511620?pwd=OC9GcnJRNmJpMTdXdXFhaUpCUkx4QT09 or by opening a browser to zoom.com/join and typing in Meeting ID: 954 5651 1620 and Passcode: 85747