Seen on this page. The war tubas look like a musical instrument (some kind of Dadaist/Futurist sound-art device, or perhaps a super-loud military-band instrument designed to strike terror into the hearts of enemies, much as bagpipes were), but they were actually devices for acoustically locating incoming aircraft. I wouldn't be surprised if the photograph in question has graced at least one CD of experimental music/noise-art.
Want to say something? Do so here.
Note to spammers: This comment system applies the rel=nofollow attribute to the poster's URL and all links. Posting links to this page will not improve their search engine rankings.
Please keep comments on topic and to the point. Inappropriate comments may be deleted.
Note that markup is stripped from comments; URLs will be automatically converted into links.