The West Maui Mountains or West Maui Volcano, known to the Hawaiians as Maui Komohana and to geologists as Mauna Kahalawai, forms a much eroded shield volcano that constitutes the western one-quarter of the Hawaiian Island of Maui. Since its last eruption approximately 320,000 years ago, the West Maui Mountains have undergone substantial stream erosion. The port of Lāhainā lies on the southwestern slope. The summit peak is called Puʻu Kukui, at 5,788 feet (1,764 m) elevation. Pu'u Kukui translates into "candlenut hill".