Having land area of 124,450 km² spreading between latitude 0° 50′ and 5°N and longitude 109° 36′ and 115° 40′ E, it makes up 37.5% of the land of Malaysia. Sarawak also contains large tracts of tropical rain forest home to an abundance of plant and animal species.
The state stretches for some 750 km along the north east coastline of Borneo, interrupted in the north by about 150 km of Brunei coast. Sarawak is separated from the Indonesian part of Borneo (Kalimantan) by ranges of high hills and mountains that are part of the central mountain range of Borneo. These get higher to the north and culminate near the source of the Baram River with the steep Mount Batu Lawi, Mount Mulu in the Park of the same name and Mount Murud with the highest peak in Sarawak.
Usun Apau Plateu, legendary place of the Kenyahs and some Kayan of Borneo. Apau in local dialect is Plateau. Usun mean in local dialect is on top of, further up, also as a noun as a name of a women. There are reportedly numerous high rise waterfall such as Julan and Selio waterfall (a.k.a U-ong Julan in Kenyah's language) coming from this Usun Apau that feed to Baram river, Balui river and Tinjar river. Was told as a scared place of the former Kenyahs samans.