It looks like a retro elevated chainstay thing, quite nice in a swoopy sort of way.
[img]http://3.bp.blogspot.com/-X2l7AUhF3G8/TmjO89OhBVI/AAAAAAAAAeI/bIGLnls7Ark/s1600/IMG_6977-770484.jpg[img]
Unfortunately it was just stolen and I was wondering if anyone could help by IDing it. An unusual frame like this has a good chance of getting noticed by a bike geek, and I'd like the theft report to pop out of Google if anyone types it in:
http://www.stolenbristolbikes.com/2011/09/oonas-bike-stolen-in-clifton.html

