Cadiar Berwyn and the Roswelsh incident

We climbed Cadair Berwyn which turned out to be a hidden gem. A shapely peak from which we could see most of Wales. Our guidebook mentioned the Roswelsh incident (see https://www.higgypop.com/news/berwyn-mountains-ufo-crash/) Sadly we were not visited by aliens but did love this guide to lights in the sky that appeared on my favourite NASA website yesterday https://apod.nasa.gov/apod/ap170924.html