A prehistoric necropolis yields clues to the ancient use of sound and its effect on human brain activity.

Researchers detected the presence of a strong double resonance frequency at 70Hz and 114Hz inside a 5,000-years-old mortuary temple on the Mediterranean island of Malta.

It is well-known that special sound is associated with the sacred.

Ħal Saflieni Hypogeum is an underground complex created in the Neolithic (New Stone Age) period as a depository for bones and a shrine for ritual use.

A chamber known as “The Oracle Room” has a fabled reputation for exceptional sound behavior. Standing in the Hypogeum is like being inside a giant bell. At certain pitches, one feels the sound vibrating in bone and tissue as much as hearing it in the ear.

The Oracle Room is a speaking chamber carved with a rounded interior surface. The result is an echo which reverberates throughout the hypogeum.

A word spoken in The Oracle Room is magnified a hundredfold and is audible throughout the entire structure.

The effect on the credulous can be imagined when the oracle spoke and the words came thundering forth through the dark and mysterious place with terrifying impressiveness.

Listen to these magical sounds coming from the stone itself:

A mans voice chanting around the range of 70 – 130 hz frequency turns the entire temple complex into a bizarre trance-inducing room that seems able to stimulate the creative center of the human brain.

At these resonance frequencies, even small periodic driving forces can produce large amplitude oscillations, because the system stores vibrational energy. Echoes bounce off the hard surfaces and compound before they fade.

How and why did ancient people use sound?

Now, an international team of scientists has unlocked the ancient mystery of The Oracle Chamber in Malta’s Hypogeum of Hal Saflieni.

As demonstrated in a new scientific study, each person has his individual frequency of activation, always between 90 and 120 hz.

Volunteers with a frontal lobe prevalence during the testing received ideas and thoughts similar to what happens during meditation, whilst those with occipital lobe prevalence visualized images.

Ancient populations were able to obtain different states of consciousness without the use of drugs or other chemical substances.

And the researchers to add: “The Neolithic itself was characterized by cultures focused on new invention…enormous collective collaborations over extended periods of time. For these large-scale projects of agriculture and building, social cohesion and compliance was absolutely necessary.”

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