The Official Aldorlea Games Forum

When you enter the dream of a guy named "Amenofis" found in the Egyptian Throne Room which is in Pharaoh Ramsis' dream, which is in Erin's dream, you will be teleported to a very tiny room.

This would qualify in most of Indy's games as a secret room. Or a "Sneaky" room at the very least.

I don't remember that part at all
But yeah DSC doesn't have "secret rooms" or I should rather say rooms named secret rooms and numbered.