Surrounded by a lagoon, which extends out to a reef, the waters on the south-eastern side on the island are particularly good for swimming and snorkelling making Muri Lagoon one of the more popular destinations. The islands lush interiors and mountainous peaks are cloaked in dense vegetation and remain largely unpopulated. Getting around is relatively easy with a main ring road that traces the coastline. A bus route runs throughout the day in both directions until 11pm. Avarua, on the north coast, is the capital of Rarotonga and offers a variety of shops and cafes with an open air market held each Saturday.