Egyptian moon god. Over time, he developed as a god of wisdom, and came to be associated with magic, music, medicine, astronomy, geometry, surveying, drawing and writing. Thoth was generally depicted in human form with the head of an ibis, wearing a crown consisting of a crescent moon topped by a moon disk. He could also be depicted wholly as an ibis or a baboon. Both the ibis and the baboon were sacred to him. His principal sanctuary was at Hermopolis (Khmunu) in the Nile delta region.