An Explosive Ordnance Disposal (EOD) team was mobilised to an area near Dolwyddelan in Conwy, North Wales after the discovery of a suspect device. It was confirmed as a WWI-era munition and disposed of in a controlled explosion in a local field.
Large tracts of rural land in Wales were used for military training during both World Wars and such discoveries periodically occur in remote areas.
See: https://www.dailypost.co.uk/news/north-wales-news/watch-moment-bomb-experts-detonate-14915778