The 4 major islands of Indonesia?

1. Java: Java is the most populous island in Indonesia, and is home to the capital city, Jakarta. It is also the most industrialised island in the country, and is known for its rich cultural heritage, including the UNESCO World Heritage Sites of Borobudur and Prambanan temples.

2. Sumatra: Sumatra is the second largest island in Indonesia, and is home to a diverse range of ecosystems, including rainforests, mangroves, and volcanoes. It is also home to some of the world's largest orangutan populations.

3. Kalimantan: Kalimantan is the third largest island in Indonesia, and is shared with Malaysia and Brunei. It is known for its lush rainforests, which are home to a variety of wildlife, including orangutans, proboscis monkeys, and sun bears.

4. Sulawesi: Sulawesi is the fourth largest island in Indonesia, and is known for its unique shape, which resembles a flower. It is also home to a variety of cultures and languages, and is known for its traditional arts and crafts.