Well, that's one way to add winglets to an older 737.
Actually, I revise my previous analysis slightly. Not a circle-to-land, but a long "final" down a side valley, with a 60° turn for alignment 1/2 mile off the end of the runway.
Kinda like the LDA approach into KDCA 19 - except with low sun, fog, mountains - and no radio guidance.
http://www.altairva-fs.com/training/.../DCA_LDA19.gif