Analysis of information sources in references of the Wikipedia article "Mount Zion" in English language version.
The city was built upon two hills, which are opposite to one another, and have a valley to divide them asunder; [...] Of these hills, that which contains the upper city is much higher, and in length more direct. Accordingly, it was called the "Citadel," by king David; [...] Now the Valley of the Cheesemongers, as it was called, and was that which we told you before distinguished the hill of the upper city from that of the lower,... (Book 5, Chapter 4, §1; or V:137)