Hypogeum of Malta

The incredible sound effects of Malta’s Hypogeum Hal Saflieni

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The Hypogeum of Hal Saflieni in Malta is a UNESCO World Heritage Site which is believed to be the oldest prehistoric underground temple in the world.  The subterranean structure is shrouded in mystery, from the discovery of elongated skulls to stories of paranormal phenomena. But the characteristic that has been attracting experts from around the globe is the unique acoustic properties found within the underground chambers of the Hypogeum. 

Hal Saflieni Hypogeum is a cultural property of exceptional prehistoric value, dating back approximately 5,000 years and the only known example of a subterranean structure of the Bronze Age.  The 'labyrinth', as it is often called, consists of a series of elliptical chambers and alveoli of varying importance across three levels, to which access is gained by different corridors.  The principal rooms distinguish themselves by their domed vaulting and by the elaborate structure of false bays inspired by the doorways and windows of contemporary terrestrial constructions.  

Although not known for certain, it is believed that the hypogeum was originally used as a sanctuary, possibly for an oracle. It is for this reason that a unique chamber carved out of solid limestone and demonstrating incredible acoustic properties has been called ‘the Oracle Chamber’.  According to William Arthur Griffiths, who wrote ‘Malta and its Recently Discovered Prehistoric Temples’, a word spoken in the Oracle room is “magnified a hundredfold and is audible throughout the entire structure.  The effect upon the credulous can be imagined when the oracle spoke and the words came thundering forth through the dark and mysterious place with terrifying impressiveness."

It is said that 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.  Sarasota arts and architecture critic Richard Storm explained the sensation: "Because you sense something coming from somewhere else you can't identify, you are transfixed."

The acoustic properties within the Hypogeum have already been studied extensively. It was found by Maltese composer Ruben Zahra and a research team from Italy that sound resonates at 110 Hz within the Oracle chamber, and this matches the same or similar frequency that has been found in many other ancient chambers around the world, including Newgrange in Ireland.  According to Dr Robert Jahn from Princeton University, it may be the dimensions of the room or the quality of the stone that determines the exact pitch of this echo behaviour.

But the question remains – was it intentional? Was the Hypogeum actually designed to enhance amplification? If so, why? Is it possible that the designers of these spaces knew something that modern scientists are just rediscovering? 

One theory put forward by Paolo Debertolis and Niccolo Bisconti of the Universities of Triests and Siena respectively, is that the chamber was constructed in such a way as to created acoustics that would affect the psyche of people, perhaps to enhance mystical experiences during rituals, and this perspective has received scientific backing.  Dr. Ian Cook of UCLA and colleagues published findings in 2008 of an experiment in which regional brain activity in a number of healthy volunteers was monitored by EEG through exposure to different resonance frequencies. Their findings indicated that at 110 Hz the patterns of activity over the prefrontal cortex abruptly shifted, resulting in a relative deactivation of the language centre and a temporary shifting from left to right-sided dominance related to emotional processing. This shifting did not occur at other frequencies.   

Whether it was deliberate or not, the people who spent time in the Hypogeum under conditions that may have included ritual chanting -- were exposing themselves to vibrations that may have impacted their thinking. In addition to stimulating their more creative sides, it appears that an atmosphere of resonant sound in the frequency of 110 would have been “switching on” an area of the brain that bio-behavioural scientists believe relates to mood, empathy and social behaviour.

Despite the plethora of research on the acoustic properties of the Oracle Room, there remain just as many questions as answers. It is for this reason that the Hypogeum was the key location for the Archaeoacoustics Conference held between 19 th and 22 nd February. During the event, a multi-disciplinary undertook a challenging and unprecedented experiment.  Ultrasensitive microphones were placed in the Oracle Chamber of the Hypogeum and digital recorders were used to test the response of the chamber by different voices and by simple musical instruments which could have been present in the time the Hypogeum was in use (4000 - 2,500 BC).

Comments

dysan's picture

This structure is clearly of “archaeoacoustical” importance.. amazing :)

Of course the ancients, whomever 'they' truly were, knew far more than we do today when dealing with nature and living entities.  Tesla was the man that should have enlightened the masses, but, unfortunately, he only enlightened the few--myself included.

In time, the masses will discover the secrets, and although I'm not really into violence... those that have stolen, hidden and abused our past knowledge should pay in some way.  Knowledge should belong to everyone and although I believe it is accessible via our "mind", we have to be trained to open it--that is the opposite of what our current historical perspective has been about--especially, when speaking of 'schooling' or 'education'.

Keep digging.  I love it when the masses are forced to think.

The Derinkuyu, Turkey, and the Hypogeum, Malta are the same people, the same stone culture through the ages, check the similarities between the two underground cities. they are identical. I can go on and on as to how this culture has influenced our world from the time of the 11 thousand year old temple in Gobekli tepe, Turkey. much can be said about this three stone sites in the connection to Stonehenge, Egypt and precolonial America, the proof is literally written in stone. also check single stone carved temples, all of them are interconnected by the same, not different, some-what similar stone cultures. I mean the same culture and the proof is in the details and carvings and one more thing that ties them to the same sun worshiping culture, yes, the sun God. the disk you see on the back of saints come from that same culture.

nisa burkay's picture

I have read also that  a form of acoustics hallway, where sounds were played similarly exists at Efesus and was used for healing.

Nisa Carroll Burkay

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