What kinds of symbols are these? Could they be symbols from alchemy?
Also, here are a few GIFs of the promo. From Tumblr
The last image is of RUMPLE, a sickly green color, like he’s back from the dead, in the Enchanted Forest. Neal and Belle must figure out a way to save him, and then go to this place which looks to be a cover to a manhole, perhaps a door to the underworld. CREEPY!
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"That’s how you know you’ve really got a home. When you leave it, there’s this feeling that you can’t shake. You just miss it." Neal Cassidy