Guillaume Fleury, who works at the Museum of Natural History, shows a Charonia lampas trumpet shell, which was first found in 1931 in an archaeological dig at the mouth of the Marsoulas Cave, on February 10, 2021 at the museum in Toulouse. - After more than 17,000 years of silence and decades forgotten in a French museum, a shell fashioned into a horn by our prehistoric ancestors has been played again, as a result of new research. (Photo by GEORGES GOBET / AFP)

Guillaume Fleury, who works at the Museum of Natural History, shows a Charonia lampas trumpet shell, which was first found in 1931 in an archaeological dig at the mouth of the Marsoulas Cave, on February 10, 2021 at the museum in Toulouse. - After more than 17,000 years of silence and decades forgotten in a French museum, a shell fashioned into a horn by our prehistoric ancestors has been played again, as a result of new research. (Photo by GEORGES GOBET / AFP)

Guillaume Fleury, who works at the Museum of Natural History, shows a Charonia lampas trumpet shell, which was first found in 1931 in an archaeological dig at the mouth of the Marsoulas Cave, on February 10, 2021 at the museum in Toulouse. - After more than 17,000 years of silence and decades forgotten in a French museum, a shell fashioned into a horn by our prehistoric ancestors has been played again, as a result of new research. (Photo by GEORGES GOBET / AFP)

Guillaume Fleury, who works at the Museum of Natural History, shows a Charonia lampas trumpet shell, which was first found in 1931 in an archaeological dig at the mouth of the Marsoulas Cave, on February 10, 2021 at the museum in Toulouse. - After more than 17,000 years of silence and decades forgotten in a French museum, a shell fashioned into a horn by our prehistoric ancestors has been played again, as a result of new research. (Photo by GEORGES GOBET / AFP)

Guillaume Fleury, who works at the Museum of Natural History, shows a Charonia lampas trumpet shell, which was first found in 1931 in an archaeological dig at the mouth of the Marsoulas Cave, on February 10, 2021 at the museum in Toulouse. - After more than 17,000 years of silence and decades forgotten in a French museum, a shell fashioned into a horn by our prehistoric ancestors has been played again, as a result of new research. (Photo by GEORGES GOBET / AFP)

Guillaume Fleury, who works at the Museum of Natural History, shows a Charonia lampas trumpet shell, which was first found in 1931 in an archaeological dig at the mouth of the Marsoulas Cave, on February 10, 2021 at the museum in Toulouse. - After more than 17,000 years of silence and decades forgotten in a French museum, a shell fashioned into a horn by our prehistoric ancestors has been played again, as a result of new research. (Photo by GEORGES GOBET / AFP)

Guillaume Fleury, who works at the Museum of Natural History, shows a Charonia lampas trumpet shell, which was first found in 1931 in an archaeological dig at the mouth of the Marsoulas Cave, on February 10, 2021 at the museum in Toulouse. - After more than 17,000 years of silence and decades forgotten in a French museum, a shell fashioned into a horn by our prehistoric ancestors has been played again, as a result of new research. (Photo by GEORGES GOBET / AFP)

Guillaume Fleury, who works at the Museum of Natural History, shows a Charonia lampas trumpet shell, which was first found in 1931 in an archaeological dig at the mouth of the Marsoulas Cave, on February 10, 2021 at the museum in Toulouse. - After more than 17,000 years of silence and decades forgotten in a French museum, a shell fashioned into a horn by our prehistoric ancestors has been played again, as a result of new research. (Photo by GEORGES GOBET / AFP)

Guillaume Fleury, who works at the Museum of Natural History, shows a Charonia lampas trumpet shell, which was first found in 1931 in an archaeological dig at the mouth of the Marsoulas Cave, on February 10, 2021 at the museum in Toulouse. - After more than 17,000 years of silence and decades forgotten in a French museum, a shell fashioned into a horn by our prehistoric ancestors has been played again, as a result of new research. (Photo by GEORGES GOBET / AFP)