[Svartalfiar]

"Why would you move 75 large stones just so you could dance around twice a year? If you put a roof on it you can use it all year," she told the Salisbury Journal.

Why would you move 75 large stones just to build a meeting room? Why wouldn't they just make the 1st floor structure out of wood as well? It would be so much less work. Unless, of course, there was some other kind of motivation behind it, like religious stuff..

[PapaBear3625]

Why would you move 75 large stones just to build a meeting room?

As structural support elements, logs would be lighter and easier to transport than stones.