DocAuch22 t1_iye4jyo wrote
There are some pretty tall towers in my neighborhood on Mt Washington labeled Liberty Tunnel directly over it. Not sure what they are for, but I’m sure they are connected in some way.
rangoon03 t1_iyea3cv wrote
Its the ventilation system: https://www.brooklineconnection.com/history/Gallery/Tunnels.html#14
Plastic-Relation6046 t1_iyes9gf wrote
I only learned this a few years ago.....so interesting always wondered what those were!
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