Po-Metru

The Metru Nui city of stone, the carvings and statues on Metru Nui were carved in Po-Metru. The local Vahki is Zadakh. It was near the northern "tip" of Metru Nui, and was where the Vahki were built. Po-Metru was Onewa's home before becoming a Toa, and again when he returned to Metru Nui as a Turaga. It was the least damaged part of the city after the Great Cataclysm, leading to its use as a shelter for Matoran while Metru Nui was being repaired. The entire Metru was later repaired by the Staff of Artakha.

Trivia
It has been revealed during the 2005 saga that there is a Brotherhood of Makuta base underneath it.