In the year 1783 I visited eight counties in Wales, from motives of curiosity. While I was in that part of the country I was led to go down into a coal-pit in Shropshire, but my curiosity nearly cost me my life; for while I was in the pit the coals fell in, and buried one poor man, who was not far from me: upon this I got out as fast as I could, thinking the surface of the earth the safest part of it.