Heliopolis (ancient Egypt) from him the true length of the year and month, upon which he formed his octaeterid, or period of 8 years or 99 months. Ptolemy II had Manetho, the chief priest of Heliopolis, collect his history of the ancient kings of Egypt from its archives. The later Ptolemies probably took little interest in their "father" Ra, and Alexandria had eclipsed the learning of Heliopolis; thus with the withdrawal of royal favour Heliopolis quickly dwindled, and the students of native lore deserted it for other temples supported by a wealthy population of pious citizens. By the 1st century BC, in fact,
Valley of the Thracian Rulers clay amphorae. Undoubtedly, the most impressive item of the funeral equipment is the gold mask, which was laid on the face of the deceased person. It was made of a solid 673-g gold plate with individual features - thick hair, beard and mustache, the eyes half-closed. This is one of the earliest and richest tombs discovered in the Valley. Valley of the Thracian Rulers The Valley of the Thracian Rulers is a popular name which was made public by the archaeologist Georgi Kitov and describes the extremely high concentration and variety of monuments of the Thracian culture in the Kazanlak