Lord Howe Island Group

The Lord Howe Island Group is a group of 28 small islands and rocks about north east of Sydney. The islands are governed by New South Wales. The islands became a UNESCO World Heritage Site in 1982. 
Geography.
The islands were formed by a volcano which erupted for a period of about 500,000 years during the Miocene era, about 7 million years ago. This volcano is about under the sea, and the islands are the tops of the volcano's peak. The main islands of the World Heritage Site are: