Board Thread:Spoilers!/@comment-6175354-20151221210207/@comment-1916997-20160110075132

Hmcooper4 wrote: Where is that speculation coming from? I highly doubt that Underbrooke was made to look like SB just to please a certain wicked witch. and I quite frankly don't even see why she would WANT to have the underworld resemble storybrooke. Just my opinion.

So, for now at least, all we can certainly deduce is that Zelena, at some point in story line, manages entrance to the UW, and meets Hades. It could be present day. It could be a flashback. And one option for flashback could be the point where Rumple "kills" her in S3. There may be more going on with what happened there than we are currently aware. (Or maybe not, this is just a theory) Fans on set heard dialog. That's where were getting it from.