Ngeremlengui, located on the north-central west coast, includes the large hill mass of Roismlengui and vast tracts of the interior along the Ngermeskang River.

Along the west coast between the inlet to Ngeremeduu Bay and the Chometubet River, the terrain is very rugged with some of the highest hills in Palau including Badechemetei.

[3] Thick fringes of mangrove swamp forest are found along the Ngermeskang and Ngerbechederngul Rivers in the northeast corner of Ngeremeduu Bay and along the northern coast.

Along a broad belt of low hills inland of the mangroves are large areas of savanna with patches of forest.

Presently, most of the use of land in Ngeremlengui is confined to gardens surrounding the modern villages of Ngermetengel, Imeong, and Ngchemesed.

Interspersed with these kitchen gardens are stands of agroforest which include coconut, betelnut, breadfruit, and almond trees, and banana plants.

In and around many of the uninhabited villages are stands of coconut and betelnut palms, and occasionally patches of irregularly attended taro swamp gardens.

According to informants, except for occasional forays to hunt pigeon or harvest special plants, there is little active use of most of the interior of Ngeremlengui.

The Mount Ngerchelchuus is the Republic of Palau's highest point and is located at the border of the states of Ngardmau and Ngeremlengui, on the island of Babeldaob.

These settlements were focused on the rich soil with a mixed forest on a thin strip of land along the coast, on the north shore of the bay, and along the major rivers just above the reaches of the mangroves.

[11] This article incorporates public domain material from Snyder, David; Adams, William Hampton; Butler, Brian M. (1997).