Deffufa is a unique type of Nubian architecture. This was made from mud-bricks and used for religious structures. There are only three known deffufas in existence today.
Explanation:
Hope this helps I leraned about this last week I pretty sure im right:)...
The word Deffufa descends from either the Nubian term for mud-brick building, or from the Arabic word Daffa meaning "mass" or "pile". ... Like the other Deffufas, it was built of thick mud-brick walls to provide cooler temperature in the hot climate.
According to http://www.ancientsudan.org/arthistory_01_kermatemples.htm
