DAILY MAIL : SCIENCE : PREHISTORIC SHELL TRUMPETS
Excerpts: Amazingly, eight of the instruments still worked perfectly, with the loudest toot reaching 111.5 decibels - as loud as a powerful car horn or trombone.Researchers believe that these trumpets would have been used as an ancient form of communication technology, with simple codes shared between communities.
These blasts could easily travel the three to six miles (five to 10 km) between the Stone Age villages where the horns were discovered.
They could have been used to communicate between different settlements, warning of attacks or coordinating harvest times.
Others, found deep within abandoned mines, might have been used to send messages through the underground darkness.
*** See the photos of the shells and read more about the archeology!
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