Unidentified tunnel.
Ring #97 Northbound Express tunnel.
Railroad tunnels and bridge, south of Central Avenue.
Unidentified track tunnel.
Unidentified subway tracks.
Right-of-way on portal.
Sea Beach Line right-of-way at 21st Avenue.
9th Street in Brooklyn.
Central Avenue bridge.
Opposite Trinity Cemetery.
Sea Beach Line and Long Island Railroad cut, north to 9th Avenue.
Sea Beach Line and Long Island Railroad cut, northwest to near 11th Avenue.
Sea Beach Line at 19th Avenue.
Sea Beach Line, Avenue R.
Sea Beach Line, 11th Avenue.
Sea Beach Line and Long Island Railroad cut, north near 11th Avenue.
Looking north from the intersection of Broadway and 6th Avenue.
Southbound express tunnel.