Underwater and coastal surveys in the Marquesas Islands have identified several massive basalt-carved plazas specifically designed for acoustic resonance. These platforms, dating to roughly 500 AD, are surrounded by stone depictions of ancestral "warrior-dancers" in rhythmic poses.
Acoustic engineers and archaeologists believe these sites were the birthplace of early Haka-style festivals, where communal stomping and drumming on the basalt slabs created a powerful, rhythmic vibration intended to communicate with the gods. The discovery pushes the known origins of these iconic Polynesian traditions back several centuries.