Ujung Kulon National Park is a national park at the westernmost tip of Java, located in Sumur District of Pandeglang Regency, part of Banten province in Indonesia. It once included the volcanic island group of Krakatoa in Lampung province, although current maps has suggested the Krakatoa island group as its own protected area, the Pulau Anak Kra…Ujung Kulon National Park is a national park at the westernmost tip of Java, located in Sumur District of Pandeglang Regency, part of Banten province in Indonesia. It once included the volcanic island group of Krakatoa in Lampung province, although current maps has suggested the Krakatoa island group as its own protected area, the Pulau Anak Krakatau Marine Nature Reserve.