It is surrounded by a range of towering mountains, and its valley, Wadi Samail, is approximately 50 kilometres (31 miles) from the capital Muscat.

Samail is distinguished by its significant geographical location, as it serves as the main gateway between the governorates and regions overlooking the Gulf of Oman and the interior areas facing the desert and southern plains.

[2] The wadi (valley) of Sama'il,[3] also referred to as the "Sumail Gap", divides Al-Hajar Mountains into the Eastern and Western subranges.

Samail is also considered the homeland of many prominent Imams, scholars, and jurists who played a significant role in building Islamic civilization and serving the noble creed throughout the ages.

It is distinguished by its ancient fortress, which nobody knows the builder of, except that the last person to renovate it was Imam Nasser bin Marshid Al Ya'arubi.

Samail is also characterized by numerous tourist attractions, such as terraces, springs, and lush oases, with around 194 aflaj (irrigation channels).

The walls are 1.7 meters thick, reinforced from both the northern and southern sides with foundations, each measuring 1.5 m (4.9 ft) in length and 80 centimetres (31 inches) in width, extending to the upper ground.

The height of this chamber is 3.7 m (12 ft) to the lower side of the beams supporting the roof, made of palm trunks.

It is believed that the cave served as a water storage facility, with signs of plastering, and it might have been used as a prison for punishing criminals.

The healthcare sector also witnessed substantial advancements, with the establishment of the specialized Samail Hospital and the presence of various comprehensive health centers throughout the wilaya.

[7] Furthermore, Samail flourished in several other domains, including the expansion of its road network and the improvement of electricity, water, and sanitation services.

The wilaya embraced modernization and development, making remarkable strides in various aspects of its infrastructure and public services, which contributed to enhancing the quality of life for its citizens during this era of renaissance under the visionary leadership of Sultan Qaboos.