Here's one for our glyphs gang. I'm looking for something I saw once on a Discovery Channel or History channel show.
It was about a remarkable engineering feat of the Romans in Spain when they were mining gold out of a mountain. Somehow they dugs shafts throughout the mountain and then introduced water to a shaft at the top, using the hydraulic power of the water/gravity combination to almost completely hollow out the mountain.
Did anyone else ever see that show or know anything about it? It was a remarkable feat.
dunno. Maybe this one?
http://perso.wanadoo.es/emmcr/