Tonga is an archipelago of 172 islands in the South Pacific, most of which are uninhabited, covering an area of 7700 sq km (3000 sq miles). The major island groups are Tongatapu and Eua, Haapai and Vavau. Tongas high volcanic and low coral forms give the islands a unique character. Sightseeing on Tongatapu should include the Royal Palace on the waterfront in Nukualofa. The grounds are decorated with tropical shrubs and flowers. The Malaekula (Royal Tombs) are situated in the southern part of the business district along Taufaahau Road. Other sights include: The Anahulu Cave, an underground cavern of stalactites and stalagmites near the beach of the same name. Local staples are ufi (a large white yam) and taro. Other dishes include lu pullu (meat and onions, marinaded in coconut milk, baked in taro leaves in an underground oven). Nightlife is sedate, limited to music and dancing in the hotels. Tongan feasts and entertainment are also organised.