"Located to the southwest of Jabal Tagug, near Aswan, on a steep, curving escarpment, this house has one of the most animated and unusual of any of Fathy's plans. Existing in rough sketches only, the location is tantalizingly close to the cliff face, matching the topographical contours to a remarkable extent." (construction not verified)
Source
Steele, James. 1997. An Architecture for People: The Complete Works of Hassan Fathy. London, United Kingdom: Thames and Hudson.