Megalithic sites in Morbihan remain subjects of archaeological mystery

The Neolithic megalithic sites in Carnac and the Morbihan region of France continue to fascinate through various archaeological hypotheses and local folklore. While legends involving fairies, korrigans, or Saint Cornély have long shaped local culture, modern interest also encompasses theories ranging from astronomy to extraterrestrial involvement.

One of the most significant mysteries involves the Grand Menhir d’Er Grah in Locmariaquer. This massive stone, which would measure 21 meters in length if reconstructed, is considered the largest menhir ever erected in Europe. Dating back to between 4600 and 4300 BCE, the 300-ton monolith was moved and shaped during the Neolithic period without the aid of metal tools or wheels.

The cause of the menhir’s collapse remains unknown. Historical records from the mid-18th century show the stone already broken into four large blocks, and local accounts from the 19th century suggested lightning might have been responsible. However, current archaeological studies have yet to provide a definitive explanation for why this colossal structure fell.