There is theoretical through trip her from adit to Nantglas lode, exiting in the Rheidiol Valley 1000ft below. State of adit, let alone connection unknown.

Scene of much speculation as these names suggest:

Henry Curwen Salmon wrote the following - referring to the Silver Mountain Company’s Prospectus in his short lived publication The Mining & Smelting Magazine:

We are scarcely suprised at the statement that, from careful surveys a rich course of recently intersected is estimated from 80 to 10 fathoms long “ and contains at least £30,000 worth of ore above the adit level; the amount below being incalculable.“ Well may Captain Tregonning, manager of the Grogwithion Mines, one of the reporters on this mine, ask: Where is there in Cardiganshire such a great chance of making profits; or, where is there in this country such a long distance driven in a deep adit, on such a splendid lode? Where indeed Captain Tregonning ! Captain Matthew Franics seems to be connected with this concern, which is to be hoped will prove an exception to the other mines in this county he has the means of bringing before the public, during the last seventeen or eighteen years, every one of which have ended in failure..

Worked by adit some distance below road. Later, a level was driven eastwards that connected with workings on the Nantglas Lode.