Preiddeu Annwfn

"Preiddeu Annwfn," sometimes translated as "The Spoils of Annwfn," is a poem found in the "Book of Taliesin," a collection of medieval Welsh poetry. It is attributed to the legendary bard Taliesin and is considered one of the most important works of early Welsh literature. The poem describes a journey to Annwfn, often interpreted as an Otherworld or the realm of the dead in Welsh mythology.