Fausset's Bible Dictionary
("a worm".) A station in Israel's march (Numbers 33:21-22). Roman Rasa, 30 miles from Elath, on the road to Jerusalem, on the plateau of the wilderness near the hill now named Ras-el-Κaa , i.e. "head of the plain," N.W. of Ezion Geber, and W. of El Beyaneh.
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Fausset, Andrew R. Entry for 'Rissah'. Fausset's Bible Dictionary. https://www.studylight.org/dictionaries/eng/fbd/r/rissah.html. 1949.