There are thousands of islands in Indonesia, but only a fraction of them are made up of. The majority of the islands are volcanic in origin and consist of solid rock. The smaller islands are typically made up of sand, coral, and shells.
The largest island in Indonesia is Java, which is home to more than half of the country’s population. Other large islands include Sumatra, Kalimantan, Sulawesi, and Irian Jaya.
The islands that are made up of are typically …