GR translation: looking for cabs up and down the Hill

[Mike Jing]

V70.36-71.2   But segway into the Roxbury hillside. Snow packs into the
arches, the crosshatchings of his black rubber soles. His Ar’tics clink
when he moves his feet. The snow in this slum darkness has the appearance
of soot in a negative . . . it flows in and out of the night . . . . The
brick surfaces by daylight (he only sees them in very early dawn, aching
inside his overshoes, looking for cabs up and down the Hill) are flaming
corrosion dense, deep, fallen upon by frosts again and again: historied in
a way he hasn’t noticed in Beacon Street . . . .

What does "the Hill" refer to here?  Is it the hill in Roxbury?
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