|Location||In between Le-Wahi and Onu-Wahi|
Prior to the Toa Mata's arrival on Mata Nui, traveling in between villages on the surface was very dangerous and their fore the Onu-Matoran began building underground highways that connected the villages together. The last of the highways created was the Le-Koro highway that linked Onu-Koro to Le-Koro. However construction on the highway was slow as the lightstone supplies was low until Takua helped find a new source. The highway was soon completed but fell out of use once the Toa Mata arrived on the island but it was still occasionaly used by merchants or Matoran traveling alone. It was destroyed when Mata Nui awakened.
The Le-Koro Highway was one of the largest highways on all of Mata Nui considering how Onu-Koro and Le-Koro were on opposite sides of the island. The highway was lit by lightsones to guide travellers and to scare away Rahi.