The Visio Tnugdali ("The Vision of Tnugdalus") is a 12th-century religious text reporting the otherworldly vision of the Irish knight Tnugdalus (later also called "Tundalus", "Tondolus" or in English translations, "Tundale"). It was "the most popular and elaborate text in the medieval genre of visionary infernal literature" and had been translated from the original Latin forty-three times into fifteen languages by the 15th century, including Icelandic and Belarusian. The work remained most popular in Germany, with ten different translations into German, and four into Dutch. With a recent resurgence of scholarly interest in Purgatory following works by Jacques Le Goff, Stephen Greenblatt and others, the vision has attracted increased academic attention.