A Supreme Council for Antiquity (SCA) mission in northern Sinai said on Friday that routes used by Egyptian army soldiers during the Islamic era, a weaving workshop, a mill and water tanks were unearthed in Al-Farma fortress.
The find dates back to the Abbasid reign, said SCA Secretary General Zahi Hawwas.
Hawwas added that the find was made during restoration work in the Islamic site.
Rectangular chambers were also unearthed inside the fortress, he said, adding that they could have been used for storing cereals and as a stove.
A weaving workshop was also unearthed, he added.
Farma Fortress, some 35-Kms away from Al-Qantara East town, includes several fortifications that date back to several historical eras.