These ladders and vents are placed randomly in the mile of tunnel between the Brighton's Corner
and Liberty St. Stations.  This is one of the few ladders which has not rusted through.  These vents
allow rain and leaves to get in the subway.
 
 
 

A small vent in the tunnel roof.  There are many of these small vents.
 
 
 

(end Linn St. Station photos)