The plateau around the summit is dense and evergreen, although the biodiversity of trees is limited compared to similar areas of continental rainforest.

[5] It is 3.25 miles (5.23 km) to the southeast of Northwest Point where the Headridge Hill rises to a height of 335 metres (1,099 ft).

At 3.5 miles (5.6 km) in width, the most narrow point of Christmas Island is a line drawn north–south through Murray Hill.

[8] It is conjectured to be an ancient atoll, with lime formation dominating the terrain, with phosphates of alumina and iron recorded on the hills.

[11] The plateau around the summit is dense and evergreen, although the biodiversity of trees is limited compared to similar areas of continental rainforest.

[12] Murray Hill is an integral part of a reserve area which covers the entire southwest corner of the island.