Identification Problem

Perhaps one of this blog's readers can help with identifying the photos below.  They are clearly of the same structure.  The first one is from a book from the 1890s, where it is identified as the "Temple of the Ark" at Shiloh.  The second shows Ephraim Stern teaching with the bullhorn on June 25, 1968.  I have asked a few smart people about this, but without success.  I am doubtful that this is at Shiloh, but I'm sure it is somewhere in the hill country north of Jerusalem.  Does anyone know?

UPDATE (6/11): Indeed this structure is at Shiloh, to the east of the Visitor's Center, and now partially hidden by bushes.  It apparently was a synagogue (Byzantine period?) before being converted into a mosque.  Thanks to MB for the answer!