Ancient Etruscan Tombs May Have Been Engineered to Manipulate the Senses, New Research Suggests

Ancient Etruscan tombs in Tarquinia, Italy, may have been engineered to manipulate the senses of visitors, according to a recent study. The research, conducted by Maurizio Forte of Duke University and Jacqueline Ortoleva of the University of Oxford, used AI-assisted visual analysis, 3D architectural modeling, and acoustic surveys to examine the physical characteristics of two tombs. The findings suggest that the tombs could have produced contrasting sensory effects, with low-frequency sounds playing a key role in the environment. The study indicates that the acoustics in the tombs could have influenced visitors' cognitive states, potentially leading to a calm, focused experience in one tomb and a disorienting, dislocated feeling in another.

The Tomba del Gallo, dating to 450–400 BCE, features a steep stairway with a banquet scene and musicians playing pipe instruments. The chamber's acoustics are short and do not allow sound to build up, creating a clear sightline and short reverberation that links to alpha-band brain activity, associated with relaxed alertness and focused visual attention. The researchers suggest that visitors may have used the high-curvature areas for ritual offerings or gestures, and the combination of clear sightlines and short reverberation contributes to a calm, focused experience.

The Tomba dei Demoni Azzurri, from 450–420 BCE, is much larger and has more intense acoustics. The reverberation is longer and more intense, particularly near the banquet scene, allowing sound to pass easily between the tomb and the outside. The study suggests that the variety of reverberation times could have produced a more powerful sonic environment, with low-frequency sounds and high-frequency sounds echoing throughout the space. The combination of low-frequency vibration, loss of spatial orientation, and unintelligible speech may have left visitors feeling disembodied and disoriented. The researchers link these effects to beta-band activity and transient gamma bursts, associated with heightened alertness and threat detection.

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