In 2007 Paul Yule published a monographic study of the Himyarite empire for specialists and non-specialists alike. By means of large amounts of newly acquired data, especially from the annual field-seasons at the Himyarite capital, Zafar, it was possible to re-cast the blossoming of the tribal confederacy until the advent of Islam. New colour high-resolution photos and drawings made the text lucid and interesting. After its publication, the text attracted much discussion, and new archaeological finds came to light, the most striking of which were two 1.70 m relief representations of what seem to be a Christian or even Aksumite king, part of a 10 m long relief from about the 1st century CE, which is printed in the supplement in 3D and can be viewed with the 3D spectacles included.