That's quite the road to travel with many doors to peruse...
In fact, you piqued my curiosity with the following...
Charlie counted the steps on the way down. Interestingly, there were exactly 365 of them. As they neared the bottom of the staircase, Charlie noted a small drop in the temperature, enough to cause him to wonder if they were going to emerge outdoors somewhere. But as they reached the last step, a doorway presented itself, beyond which they could see a larger open area, and the reflective glint of what could be light off a glass window. Max stopped there a moment, and then turned to smile at them. "Charlie? You and Kip, Rick, Adrian, and Browbeat should go first here."
Charlie knew better than to stand there and ply the elf with questions. Max was a part of this, somehow, and would have told them what was going on if he had been able to do so. That he was not free to do that suggested other things.
"Come on, Kip." Charlie tightened his grip on his boyfriend's hand and stepped forward through the doorway into light.
Into moonlight, to be exact. The front and side walls of the room were made of glass panels.The glow of the moonlight lit the room all around them, almost unnaturally bright. Beyond the clear wall-panels, a ragged dark edge on the horizon suggested mountains, and the night sky blazed above it, cloudless and filled with stars. Charlie walked forward to gaze out of the front window, and gasped at their height above the ground. The room was apparently perched upon a mountain flank, with a wide valley spread out below. Directly overhead, accompanying the light of the three-quarters full moon, were shimmering bands of emerald and rose, that waxed and waned as they played within the Earth's magnetic field.
But no part of the Earth we know, Charlie now was certain