Whilst not quite 'urbex' this should add a little more context to my reply in this thread:
I cam across some old photos of this place on my phone and thought they may be of interest. When researching places using old os maps I had often noticed the label "Hydraulic ram" and wondered what it may be, especially as no modern os map ever has these labels. So after some research I found...
www.28dayslater.co.uk
(and there's an element of decay as vsisible in the first photo plus comment in the linked thread!)
I mentioned that the Erddig hydraulic ram pump drive water was fed from a 'cup and saucer' water feature. The design of this will be familiar to everyone from reservoir outlets...there are big versions and there's a regularly photographed small one....this is small too
It can be seen that it wasn't in good condition with water escaping over the edge closest to me causing a small marshland. Prior to the storms and underground movement it might not have been so bad.
(hopefully the water will prove that I wasn't trying to get one of those jaunty-angled phone snaps so popular with goontubers)
The outlet from the weir and at ground level centre left the top of the ram pump chamber.
The weir gives a constant head down to the ram pump (see linked thread for photo of that)
The ram pump in it's brick chamber
The hatch at the top is so the pump could be dropped in and lifted for seal replacement. The gate is normally locked and the mesh covering restricts the view somewhat.
Hopefully of interest to others, these were just a few grabbed shots when on site for a meeting.