JJ:
JJ sent the skimmer hissing off to the east, circling back every so often to wait for the walker.
While it's true that the walker isn't as fast as the skimmer, it's surprisingly fast, considering, so the disparity between the two vehicles isn't SO bad...
One thing that should be amazing is when the expedition gets a mile or two away from the eastern wall of The Ziggurat, because it's only then that one can really appreciate just how huge the thing is. It's one thing to say "Although its center is mostly empty, The Ziggurat is several miles high and about twice as wide/long," and to accept intellectually that that's true, and it's another to see from the outside just how huge the thing is. It's as high as a very, very high mountain, and, as mentioned, about twice as wide. It's really very large-- and lit up, too, like a tourist attraction.
Of course, as also mentioned, it SHOULD have been amazing... but Aesop and Anchorite Tearful had already seen it before, and if the others were not impressed, one might not find it entirely surprising, since the inhabitants of The Ziggurat are, in general, a difficult-to-impress bunch.
(First: tell me how your character feels about leaving The Ziggurat, and seeing it behind them, very, very slowly growing a tiny bit smaller with every mile...
Second: If anyone would like to use the OUTSIDE THE ZIGGURAT playbook to say what the expedition finds/encounters once they're about 15 miles away from The Ziggurat in the hopes of getting a reward, go ahead, first-come first-post. (Feel free to be super-weird.)
If no one does in a few days, I'll use it to post myself...)