Miles looks up from examining the inner surface of the detached panel.

"It's a low-vibration support column - see the yellow goo around it, here, where it goes into the rock? Reduces friction. They can fill the inside with various kinds of goo if they want, to alter the density of the column. So it's hollow all the way down, however far it goes into the bedrock. And there might as well be a ladder in case some poor sod needs to make repairs... what interests me is, this panel here could be opened from the inside. I think it's worth climbing up to see if we can find any more of them, higher up where they might lead interesting places. I'll go first - I couldn't catch you if you fell off."