The Surabaya metropolitan area, or known locally as Gerbangkertosusila (Javanese: ꦒꦼꦂꦧꦁꦏꦼꦂꦠꦱꦸꦱꦶꦭ, romanized: Gerbangkertasusila, 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 Jakarta metropolitan area.