using the search command will bring up a wealth of past info on damascus steel, here is one link to a thread here with a bit more info:
Linky
'damascus steel' is what is now generally applied to pattern welded steels of differing compositions, while wootz (or balut in russian) is the crucible 'watered' steel made famous in the old eastern and middle eastern legends. the history is murky at best, pattern welded damascus was found in early viking swords, and even earlier roman ones.