Aqueduct

Aquaduct is one of the rooms in Aeternis.

Layout
This old aqueduct, providing water and power for Aeternis, is one of the ways out of Aeternis, endorsed by Cobweb... Or is it?

This area is only available if you enter the tunnel junction after following Tobias' path. You are locked into the path once you follow it and doomed to enter the corridor leading to the exit, only to be trapped by Philip and Lurka, wishing to acquire the Grail for themselves.