Titan

In 1793, Plumtree wrote a paper describing a network of passages and shafts that went beyond the well-known Speedwell Cave/Mine system near Castleton. His account took him down the Speedwell Canal and deep into the cave system, but his journal described mined passages (worked mostly in darkness) that went far beyond what had then been explored. The Plumtree account specifically mentions a way out to the surface some 230 m above "by way of another man's mine". Surveying showed that one of many shafts on the surface on the mineral rake in which Speedwell's mined passages are formed was the shaft of James Hall's Over Engine Mine (JH). The Hall family were one of the many families of Castleton…