Complex sentence: In the center of the Bayon temple was an image of Buddha-Mucalinda: the Buddha sitting on a seven-headed cobra, with the serpent's hood unveiled above the Buddha as protection from the elements.
Split into simpler sentences: In the center of the Bayon temple was a Buddha image of Buddha-Mucalinda, sitting on a seven-headed cobra. The serpent's hood is unveiled above the Buddha as protection from the elements.