Across the river on the west bank are the remains of other temples, and more importantly, the burial places of the great Pharaohs of Ancient Egypt, hidden in a slender valley beyond the narrow fertile river plain.
There are no temple remains on the west bank at all.  
mnli hypothesis: There are no temple remains on the west bank at all.   premise: Across the river on the west bank are the remains of other temples, and more importantly, the burial places of the great Pharaohs of Ancient Egypt, hidden in a slender valley beyond the narrow fertile river plain.