Bible Verses About Valleys: Rephaim or giants

Then the border went up the Ben-Hinnom Valley to the south side of the Y'vusi (that is, Yerushalayim), and the border continued up to the top of the hill in front of the Hinnom Valley on the west (which is also at the northernmost end of the Refa'im Valley)

Then the border went down to the farthest part of the hill located in front of the Ben-Hinnom Valley, north of the Refa'im Valley, south of the Y'vusi; and continued down to 'Ein-Rogel,

The P'lishtim came and deployed in the Refa'im Valley.

as when the harvester collects the standing grain, reaping the ears of grain with his arm; yes, as when they glean the grain in the Refa'im Valley.