Janine Hernbrode – “Bell Rocks and Megaphones: discoveries of sounds coupled with petroglyphs in Ancestral O’odham (Hohokam) ritual landscapes”
University of Arizona ENR2 Room 107, 1064 E Lowell St, Tucson 1064 E Lowell St., Tucson, AZ, United StatesDistributed amidst the petroglyphs at three of the largest Ancestral O’odham (Hohokam) petroglyph sites in Southern Arizona are assemblages of boulders that resonate when struck producing distinct bell-like sounds. The visual traces of sound-making on large bell rocks and adjacent bedrock indicate they were not only chimed with percussion strikers to resonate with sound but also were abraded with a grinding motion to produce volumes of sound.