I visited Blaenavon's Big Pit on a school trip. I found it very interesting to actually see what it was like for miners when they had to work in the dark, damp and dusty environment. We had to go underground in a sort of cage lift. At one piont we had to turn off our lights, it was pitch black!!! Children had to work in these conditions every single day for upto around ten hours. i just wouldn't have coped. Any way it is a very memorable experience and you should vist it yourself (if you haven't already!)have fun!!!!