Parashas Masei · Passuk 33:49 · TT note 1
Chabad.org — English translation + Rashi
Torah Temimah points to Eruvin 55b (TT note on “מִבֵּית הַיְשִׁמֹת”).
English: Rabbah bar bar Chanah said: I myself saw that place, and it was three parasangs by three parasangs.
Aggadic measurement / eyewitness tradition about the size of the encampment area.
The stretch from Beit HaYeshimot to Avel HaShittim was a substantial area (three by three parasangs) — the size of the Israelite camp in the steppes of Moab.