It pushes the history of complex music back more than a thousand years, into our darkest pre-history. And not only the history of music but more specifically of song and poetry, because that's what such instruments were very often used for.Actually it does nothing of the kind, since we can trace the European tradition in both music and poetry back long before 300 BC. The Celtic languages have words for stringed instruments that are closely related to the Greek words, which means that Celts and Greeks both had stringed instruments before their languages split, some time before 1000 BC. Ancient Celtic verse is closely related in meter, structure and vocabulary to ancient verse in both Greek and Sanskrit, which takes the Celtic poetic tradition back to before 1500 BC. And that's just what we can prove; poetry and music are hard to document in the Paleolithic record, but since there are no people anywhere in the world who don't have them, they must be tens of thousands of years old. I would be willing to bet that they are as old as Homo sapiens.
High Pasture Cave, and high pastures are likely places for shepherds to need a roof. That's the opening in the photo above.
excavations around the mouth of the cave have been carried out for some years. They show that the cave once had a different entrance, which has been blocked. That entrance was improved, probably in the Iron Age, with stone steps. Butchered animal bones suggest that there was feasting around the cave entrance, perhaps preparatory to rites within.