As you wander the halls of the derelict alien ship, you start noticing... oddities. First your inertial locater starts giving you odd results, and you get some odd noise over the comms. Then your comms start breaking up, even across very short ranges. You try to return to your ship, but get lost and confused on the way to the airlock. You start getting nervous... this was supposed to be an easy job... You think you've been at this intersection before, but it didn't seem as... bendy last time. You start to run out of air... but your companions, they still have some left in their tanks... That damn useless physicist is babbling about multi-dimensional manifolds again... waste of air...
As the last of you runs out of oxygen, the manifold, sustained by your consciousness, collapses in on itself, leaving no trace that you were ever there.
...you become the DM and get to devise the next deathtrap.
When the next hapless reader falls to your trap, it will then be that unfortunate soul's chance to take out the next reader.