Update: 19:40 Our good friend The ODI has managed to snag a few photos from this set.
Thanks to one of my contacts, “The Man in Black Buttons”, on the island who ran into a friend of his who works on local set productions. I’ve since confirmed this report with other contacts on the island that this was indeed for Lost.
“Hey, recently had to work a gig at [removed]. Nearby, they were constructing sets for local productions. They were working on what looked like a giant Egyptian temple with a big staircase. Looked very cool. Talked to some of the guys and they said they couldn’t tell me what it was for, but when I asked about Lost, they glanced around and smiled. Awesome guys, very cool, so don’t want to say too much more, but this set looks like it’s going to be a big piece in the new season.”