Very atmospheric. Quite a lot of things though I reacted to, however:
The woodwind melodies are a bit messy - not so much in the beginning, but as more voices are added in, things get pretty chaotic and aimless.
Speaking of the woodwinds, they really overpower the rest of the orchestra to the point where it's rather annoying - the cellos and basses are so weak, they're barely audible!
Also, check the cello and bass writing, there seems to be some funky intervals - you've got to be careful with intervals between parts in lower register. If you're having cellos and basses in the same "layer" (as they so frequently are), octaves are nearly always most effective interval - the cello then reinforces and builds upon the basses timbre.
Kudos on really capturing the scene you describe, though!