The extreme tilt of this composition seems unecessary to me. The viewpoint is (pleasingly) unusual enought without it. Depth of field, subject, lighting all nice, otherwise.
I assume this is a snowbridge - which s certainly an unusual viewpoint. Very difficult to read - probably too great a light variance to hle both the highlights and the shadows. The diagonal placement is a bit unnerving to me.
The non-level horizon isn't something that generally makes me personally like a picture, but I am sure others will love it, so take that with a grain of salt. A little more light inside the tunnel would have helped, as I find myself wanting to see just a touch more detail. -6
I don't much care for the angle this photo is presented at, but if you were to rotate it 45 degrees CCW and crop it I think it would be a magnificent photo.