Nikumaroro, or Gardner Island, is part of the Phoenix Islands, Kiribati, in the western Pacific Ocean. It is a remote, elongated, triangular coral atoll with profuse vegetation and a large central marine lagoon. Nikumaroro is approximately 7.5 kilometres (4.7 mi) long by 2.5 kilometres (1.6 mi) wide. There are two narrow entrances through the rim, both of which are blocked by a wide reef which is dry at low tide. The ocean beyond the reef is very deep and the only anchorage is at the island's west end, across the reef from the ruins of a mid-twentieth century British colonial village, but this is safe only with the southeast trade winds. Landing has always been difficult and is most often done south of the anchorage.