Mount Mutis, also known as Nuaf Nefomasi, is a mountain and the highest point of East Nusa Tenggara, Indonesia, at 2,417 metres (7,930 ft) above sea level. It is located in the Gunung Mutis Nature Reserve in the South Central Timor Regency, 150 km (93 mi) from Kupang City, around 40 km (25 mi) north of the town of Soe. The mountain is a popular climbing site.