The Apocalypse, or Book of Revelation, is not only the last Book of the New Testament, but its most difficult, puzzling, and terrifying. It provided challenges to medieval illustrators and was the source for a number of popular images, such as Christ in Majesty, the Adoration of the Lamb, and the Madonna of the Apocalypse and contributed to the widespread use of the Evangelists' symbols.
The Morgan's Las Huelgas Apocalypse, is the latest dated (1220) and largest surviving manuscript of a Spanish tradition of illuminated commentaries on the Apocalypse by the monk Beatus of Liébana. The series of manuscripts constitutes Spain's most important contribution to medieval manuscript illumination.
The Las Huelgas Apocalypse contains three sections: the prefatory cycle, the Apocalypse, and the Book of Daniel.