On the Little Wenlock side of the Wrekin are a group of woods (Limekiln Woods, Black Hayes, Shortwoods)which are a mixture of ancient woodlands and resurgent growth covering (but far from hiding) the remains of extensive but shallow coal and limestone mining. The most evident of the remains is the adit into Steeraway mine which can be found in a large cutting, running underneath the main footpath from The Hatch to Steeraway. This adit is in all probability the same one mentioned in an 1841 report which states a large adit was driven for the purpose of taking horses in and out of the mine (the miners and the stone entered/exited via shafts, the sites of which I've been unable to locate).
The adit is blocked 20m in by a collapsed airshaft, the crownhole and a small section of the shaft being visible further up the hill. The fill could possibly be dug through to give access to the mine beyond.
There are 2 other accessible adits in the vicinity that I know of, but there may be more. An adit in the general vicinity of the old lime-kilns in Limekiln Woods neccesitates crawling for about 15-20 metres before negotiating a tight squeeze (which I have widened slightly) which leads into a small chamber. Another squeeze through a collapse leads to a far bigger chamber, about 20 metres long and with a fairly high ceiling. This is (as far as I know) the largest underground space accessible in the Wrekin Forest.
There is another adit 200 yds to the south of this one, which leads into a chamber that has partially collapsed leaving a small hole to surface.
All of the accesible workings are very small. If the blocked adit could be accessed it would lead to much more substanial workings within a 45 ft thick limestone seam but it is more than likely that these workings are flooded as the mine was reported to have been wet while working. Also, another adit (no longer accessible) at The Hatch half a mile up the hill, was reported as being flooded when it was last entered.