Surabaya metropolitan area
The Surabaya metropolitan area or Greater Surabaya, known locally as Gerbangkertosusila (Javanese: ꦒꦼꦂꦧꦁꦏꦼꦂꦠꦱꦸꦱꦶꦭ, romanized: Gěrbangkěrtåsusila, from Gresik-Bangkalan-Mojokerto-Surabaya-Sidoarjo-Lamongan), is a metropolitan area in East Java, Indonesia. It is the country's second-largest metropolitan area, after the Jakarta metropolitan area.
Source: Wikipedia — Surabaya metropolitan area (CC BY-SA 4.0)