A prominent adit, known as Fish Mine, cuts into the limestone slopes at SJ 0679 8095 alongside a public footpath. Though water-filled, it remains accessible for a significant distance. There is no indication that ore was extracted at this level; rather, it seems to have served as an entry point to deeper workings, possibly linking to shafts west of Gwaenysgor village.

South-east and uphill of the adit, remnants of opencuts, levels, and overgrown spoil heaps can be found in the woodland, though no clear mineral deposits are visible. Many collapsed levels and shaft mounds are obscured by dense vegetation.

A lower footpath follows the contours of the woods, where another level is cut into the hillside at SJ 0668 8094. Some of the original timbers remain intact, suggesting 18th-century workings. A spoil mound lies just west of this level.

Further west, a single shaft is located on the golf course at SJ 0655 8013. Below the footpath and near the mine entrance, spoil heaps remain visible. Water flows from the cave down the slope through narrow channels, feeding into a stone basin built into the rock face, measuring approximately 2 meters wide, with a pipe leading from one of the channels. About 20 meters further down the slope, another similar basin can be found.

The mining activity on the steep slopes of Coed yr Esgob appears to date primarily to the 19th century, though the area was likely explored as early as the 18th century. To the north of the woods, exploratory mining took place in the early 18th century at SJ07208160, near a cave.