Christmas Island is a place of much natural beauty and scientific interest. This peak of a submarine mountain rises to a central plateau at about 360 metres above sea level. It is fringed by an almost continuous rocky cliff that rises to an average of 10–20 metres, broken in about a dozen places by shallow bays and small beaches. The Christmas Island National Park comprises 64 per cent of the island’s total area of 135 square kilometres.
Since the first exploration of the island, in 1887, there has been continuous interest in its unique natural history. Its isolation and varied habitats have allowed a great number of flora and fauna species to develop, many of which are endemic. The national park has 12 recognised habitats, four of which are represented in this stamp issue: forest, beach, sea cliffs and wetlands.