A Water Temple at Bir Abu Safa (Eastern Desert)
By Steve E. Sidebotham, Gabriel T. Mikhail, James A. Harrell and Roger S. Bagnall.
JARCE XLI 2004
I found this, as usual, whilst looking for something else. This paper about a very unusual rock-carved temple in the southern Eastern Desert (very broadly on a level with Aswan, in a wadi linking to the Red Sea coast).