As Ahmet swings open the door ...
The door's entrance is 8 feet above the ground. There is a blast of hot, still air, for the temperature outside is positively sweaty (above 90).
All you can see, in every direction, is a relentless flat, rocky plain that reaches to the horizon. The stones are fist-sized, black or dark grey in color, resembling broken flint - there is not a single round stone that you can see. The sun is hot; the sky is azure and harsh to look at. There's no wind that you can feel. Where you can feel the sun, standing at the door's edge, the heat falls on your skin like a hammer on an anvil.
No one finds this the least familiar.
The lavender walls of the cross-dimensional room have lightened quite a lot; so that now they are pale in color.