Morbihan (56) including Carnac

It happened one day when I was absent during the dinner hour of my workmen, that an English lady and her son came to see the diggings. The latter amused himself in working with a pick about that part of the construction in the room No. 1 which resembled a chimney, where he discovered a polished stone celt of a white colour, which he showed to his mother: neither of them, however, was aware of its value, and it was flung aside amongst the debris to be carted away. It was not until the following day, when I happened to show them the polished stone celts in the museum in Carnac, that they informed me of their discovery, and regretted that they had not known better. Exertions were made to recover the lost axe, but without success.

The discovery of a stone axe in what appeared to be a chimney was all the more interesting from its crrelation with a custom still observed at Carnac, that of building into the chimney of the dwelling-house a stone celt which is supposed to preserve the house from being struck by lightning. It is to be noted also that the name of the stone axe or celt in the Breton language is Mein-Gurunn, that is to say, the Thunder Stone.