Go to the Main Scottish Cave and Mine Database Search PageMap with: Google Map, or OS Explorer Map from Streetmap.co.uk
None.
Go to the Main Scottish Cave and Mine Database Search Page
Stob nan Coinnich Bhacain, W of Ardlui, Dumbartonshire.
| NGR: | NN 30817 13969 |
| WGS84: | 56.28791, -4.73493 |
| Length: | 1800 m |
| Vert. Range: | Not recorded |
| Altitude: | 350 m |
| Geology: | Beinn Bheula Schist Formation - psammite and pelite |
| Tags: | Adit, Tunnel, ManMade |
| Registry: | second |
Tunnel, Hydro electric scheme.
A dam along an un-named river diverts the stream into the S portal of a long NNW-trending tunnel that passes through the mountain of Stob nan Coinnich Bhacain. The tunnel's hidden N portal joins onto a NE-SW trending section of buried aqueduct at ~[NN 300 156], the perpendicular path of which is marked by a series of dams along various tributary streams.
Alternative Names: None recorded.
Notes: This tunnel collects water that would otherwise flow into Loch Lomond and diverts it N to the aqueduct in Strath Dubh-Uisge. This ultimately flows into the Loch Sloy reservoir for the purpose of supplying the Sloy hydro electric power station (which happens to be S of the tunnel's inlet).
Given length approx.
Links and Resources:
This entry was last updated: 2025-10-15 04:47:46
Errors or omissions in this information? Submit corrections/additions/comments for this entry to the registrars.
All database content Copyright 2026 Grampian Speleological Group.
Web Registry software by Matt Voysey.