The oasis Samnu is located northeast of Sabha, the capital of the south and the capital of Fezzan Province (southern Libya), at a distance of 60 km, and south of the oasis of El-Zeigin at a distance of 10 km, and a distance of 30 km from the oasis of Tamanhant. These oases (Samnu, El-Zeigin, and Tamanhant) form what is known as Wadi Al-Bawanis, which extends from Jufra in the north to Ghadwa and Tamsa in the south, and from Wadi Al-Kabeer separating the southeast and southwest of Libya in the east until Wadi Al-Shati and the administrative borders of Sabha in the west.
The town of Samnu is bordered on the west by sand dunes that extend for vast distances later to form a sea of sand “Zalaf” through the Tamanhant Oasis.
The kindness of its people for those coming from afar is uttered by the expressions of their faces that beat the cruelty of nature, the lack of water, the heat of summer, the bitter cold of winter, and the mess of the sand that is scattered by the winds of (Al-Qibli) coming from the south, where the vast desert extension of what is known as (the Great Desert).
Historically, it was linked to the transit desert caravan routes. It is at a distance of 100 km from the “Zuweila and Tamsa”, the northeastern end of Wadi Murzuq. Also, it is at a distance of 40 km from the Ashkadah Oasis, which represents the eastern end of Wadi Al-Shati.
This oasis is famous for its agriculture, which is the main source of income in it, as Samnu is one of the largest producers of agricultural products such as (tomatoes, potatoes, wheat, barley and other agricultural products).
The exact meaning of its name is not known. It is likely an Amazigh word, which is means the pasture.