While our gazes are understandably focused on tomorrow’s season eight premiere, that’s not all that’s happening in the world of Game of Thrones, as pre-production continues for Jane Goldman’s prequel, reportedly set during the Long Night, starring the likes of Naomi Watts, Miranda Richardson, John Simm, and many others.

At Paint Hall Studios on Belfast, Northern Ireland, which Game of Thrones used for almost a decade and the spin-off has now taken over, a new set is being erected…

We thank @BloodmoonIRL for the following photos, which prominently show a prop for what looks like a basic pulley system of some sort, as well as a stone structure, with similar buildings in the background as well, hinting at a much larger set to be:

These look like ruins of some kind, while the scaffolding to the right is the framework for a gigantic green screen, but there’s not enough detail yet to speculate any more, especially about a story set thousands of years in the past. Nevertheless, it’s exciting to see pre-production is moving along, just as it is reassuring that they’re obviously not skimping on the sets either; ‘season one of Game of Thrones’ budget this ain’t.

Before you go, a reminder: HBO has only greenlit a pilot, which they will then use to judge whether to go ahead with the show. There’s little doubt the prequel will go to series, considering the success of Game of Thrones and the good word behind Jane Goldman’s concept for this new show, but we should still keep in mind they’re only producing—building sets for, and presumably casting for—a single episode.