For many years, the southern boundary of the area was 42nd Street.
The southern boundary is located half a block south of 127 Street.
The park next expanded in 1909, when the park's southern boundary was extended to 128th Street.
The river and its wetlands form the complex's southern boundary.
The southern boundary seems to have coincided with the present street.
It later came to be regarded as the Village's southern boundary.
We were two or three kilometers from the southern boundary of the station.
The southern boundary of the region is not precisely defined.
It is situated at the southern boundary of the park.
There are many islands along its eastern and southern boundaries.