The park encompasses an area of ( of which is marine ) , most of which lies on a peninsula reaching into the Indian Ocean . The explosion of nearby Krakatau in 1883 produced a tsunami ( giant wave ) that eliminated the villages and crops of the coastal areas on the western peninsula , and covered the entire area in a layer of ash averaging thick . This caused the total evacuation of the peninsula by humans , thereby allowing it to become a repository for much of Java ’s flora and fauna , and most of the remaining lowland forest on the island
explosion of nearby Krakatau in 1883
1883 eruption of Krakatoa
Ujung Kulon National Park