[Like the earlier fragment of rock, Namur's hand passes through the plaque without even momentary resistance - it might as well be a hologram. Behind it, if he feels around, he'll encounter something small and round embedded in the wall just behind it, possibly a button of some sort. It can't be pushed in any further than it already is, though. Was there another one of these somewhere?

The mechanical rumbling dies down without a trace... except for the way the floor is now creaking just underneath the blocked doorway, distorted in the water but just about audible all the way up top if Maria isn't too distracted.

Davies, unfortunately, is.] Look, as valuable as this site has proven, I really do think a properly-equipped team - er, not that I mean to tell you how to do your jobs, my dear, but in all honesty, I... [Nervously, he falters.] Well, I suppose it might not be relevant, but... I'm afraid I haven't felt at all well since I first came down this way.