I was traveling from madrid to to somewhere else i found this portruding in my window. Im very intrigued as it looks like ventilation but it doesnt have anything to cover from rain or animal getting in. Maps doesnt help more than my quick glance and i think im going crazy thinking what it is its use.
It was near some luggage transportation equipment if it of any help.
submitted by /u/Due-Juggernaut2893
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