Num 21:15 | NET2full | STEP | and the slope of the valleys that extends to the dwelling of Ar , and falls off at the border of Moab .”

‏ Numbers 21:15

15 and the slope of the valleys ^{▼▼tc There are many variations in this text, but the MT reading of something like “the descent of the torrents/valleys” is preferable, since it is describing the topography.}
that extends to the dwelling of Ar, ^{▼▼sn The place is unknown; it is apparently an important city in the region.}
and falls off at the border of Moab.”