UPDATE 3 (September 25)
Spoilers from yesterday’s filmings:
Well, it was clear it was an Arendelle location. Elizabeth Mitchell was there, and three others, including Sally Pressman. The others we don’t know who exactly they are. But one of them plays most likely The Duke of Weselton! The other looked like it was Anna and Elsa’s mother, but we’re not sure.
NOTE: Liz came out to see fans after she changed back into her own clothes.
UPDATE 2 (September 24)
New lovely photos!!
4x07 The Snow Queen - Elizabeth Mitchell - Filming Reports - Once Upon A Time - Photos - Set - Snow Queen - Spoilers