Halkyn District United Mines

The Milwr (or sea level) Tunnel drains the lead mines of Halkyn Mountain. Ignoring its branches, it's the longest single mines drainage tunnel in the UK measuring 8.7 miles from end to end, and it drained some 60 miles of passages. The mines it drained were worked from 1928 by Halkyn District United Mines until their final closure in 1987. The company produced a series of maps showing the main workings, the Milwr Tunnel and the five miles long Halkyn (Deep Level) Tunnel. These maps have here been superimposed on Google Earth. Zoom in and travel along the tunnels to gain an impression of their extent and imagine the immense amount of labour that went into their creation.
Read more about Halkyn District United Mines on FlintshireLeadMining

The mine plans seen here have painstakingly been stiched together using the very latest technology to offer you this unique view of the miles of passages that lie silent, deep under Halkyn Mountain, and beyond...
The project began back in April 2011 by two local enthusiasts. Initially covering a small area it has since grown to cover many square miles of the Halkyn Mountain area...

You will need to download and install the Google Earth Plugin to view this properly...
Use the mouse controls to move about the imagery in 3D...
Please be patient while the imagery loads, this will be dependent on the speed of your Internet connection...
This project is being updated regularly so check back for updates...

Halkyn District United Mines | Halkyn.org