Hi all! I'm not sure how active this thread is after all this time but I've been lurking for a long time and thought I would finally register and have a chat!
I'm the one that took the photograph of the tunnel as referenced above.
This is that photo.
Lit up tunnel in Trentham by
Jenna Goodwin, on Flickr
I have been searching for a very long time for the original ice house that is on Park Drive and I am so happy to announce that tonight, after many months of searching we have found it!
Also, I think we may have found the ruins or the gas house. It is in the same place as the map that was kindly drawn on for reference earlier in the thread.
I will update when I have taken the photographs from my camera.
I can honestly say we would not have found it if it wasn't for the incredibly valuable information from this thread, so I thank you all.