So, @obisgirl (Well, her boyfriend, actually) pointed out this very interesting picture of the final shot after a zoom out of Hansel and Gretel when they were transported by the Evil Queen to what looks like a Storybrooke waaaaaay back in time (perhaps):
Note: We discussed this picture in our Feedback and More Live Ep: http://www.onceuponatimepodcast.com/006-fam-ouat-live-show-mysterious-stranger-pre-storybrooke-and-more/
in looking at this picture, it reminded me of a shot in Lost Season 3 “A Tale of Two Cities”:
http://lostpedia.wikia.com/index.php?title=The_Island&image=The_Island_-_A_Tale_of_Two_Cities-jpg
Source: http://lostpedia.wikia.com
I watched this scene again. Just looks like mist, and snow on the tops of the trees in the background.
Yeah, I would have to agree, Hd on HULU shows the same….
I thought it was a LOST easter egg of the smoke monster