Bible dictionaries
Mount of the valley
What Bible dictionaries say about “Mount of the valley”, one article after the other.
Easton’s Bible Dictionary & Webster’s 1828 Dictionary
Mount of the valley - (Easton's Bible Dictionary)
(Josh. 13:19), a district in the east of Jordan, in the territory of Reuben. The "valley" here was probably the Ghor or valley of the Jordan, and hence the "mount" would be the hilly region in the north end of the Dead Sea. (See [423]ZARETH-SHAHAR.)
Matthew George Easton, Easton’s Bible Dictionary; Noah Webster, American Dictionary of the English Language (1828)
The article in Easton + Webster 1828International Standard Bible Encyclopedia (ISBE 1915)
Zereth-shahar is said to be situated in or on the "mount of the valley" (behar ha`emeq (Jos 13:19)). Cheyne (EB, under the word) says "i.e. on one of the mountains East of the Jordan valley (compare Josephus 13 27), and not impossibly on that described at length in BJ, VII, vi, 1-3." To the Northwest of this mountain is Wady ec-Cara, wherein there may be a reminiscence of Zereth-shahar. There is no certainty.
International Standard Bible Encyclopedia — James Orr, general editor and contributors; CrossWire SWORD module ISBE 2.2
The article in ISBE 1915