Quote Originally Posted by the_handsome_viking
Wow, that was a quick response, what time is it over there dude?

04:38 here.

I really hope pictures of these flumes show up one day on the net and get spread around a lot. Sanitation in general is pretty important in influencing the way we think of people, especially historical people.

OK heres another question...

Did the Celts build cities out of stone? and if not, why not? I typically only know of the basic Celtic roundhouse and iron age hill forts when it comes to the homes of the Celts and I don't see why they wouldn't be able to make stuff out of stone.

I think the la tene site had some stone houses but I'm not really sure if this was just a one of as far as Celtic homes went.
Most such flumes were replaced with Roman pipes and the like. And Celts used what was on hand. The walls of oppida, for example, were faced with stone, but filled with stone and earthwork, and built at a slant (similar to renaissance era forts, actually). In places with plentiful sturdy stone, one could make plenty of stone homes, but wood was in use over a wide area because of the abundance of lumber available; one uses what is available.