Principal places of Rongo's Mangaian worship were at two "marae" in the Keia district; the inland Akaoro marae, and the coastal Orongo marae, which was arguably the most important of all "marae" on the island, and constructed at the site of an abandoned village of the same name. Both have since been destroyed along with many other symbols of old gods with the introduction of Christianity in the early 19th century. They were presided over by two hereditary High Priests of Rongo. At the Orongo marae a human sacrifice was laid on a smooth block of limestone or sandstone in front of Rongo's image. Human bone fragments can still be found among the remnants at the site. At the Akaoro marae, it is evident that a platform of hala wood was erected for human sacrifice, although no traces of raised platforms have been found. In the Ivirua district was also Ivanui marae, but this was abandoned in favour of Orongo marae; it was referred to in an "eva" dance: