Kirjatharim means “city of forests.” It is an abbreviated form of the name Kirjath-jearim, the Gibeonite city associated with the ark.
The abbreviated form occurs in Ezra’s list of those who returned from exile. The supplied material records no further biblical usage for this form.
Kirjatharim is not presented as a separate city but as a shortened form of Kirjath-jearim.