Another NYC gem is the abandoned Cobble Hill Tunnel on the border of Cobble Hill and Brooklyn Heights. It is also the oldest cut and cover construction in Nort

Another NYC gem is the abandoned Cobble Hill Tunnel on the border of Cobble Hill and Brooklyn Heights. It is also the oldest cut and cover construction in North America for the subterranean fans out there. http://en.m.wikipedia.org/wiki/Cobble_Hill_Tunnel http://en.m.wikipedia.org/wiki/Cobble_Hill_Tunnel