A nine meter metal key, representing the keys to the houses Palestinian refugees left in 1948 and a symbol for the right of the return of refugees is seen at a blacksmith's workshop in the West Bank refugee camp of Aida near Bethlehem, Tuesday, May 6, 2008. Israel will mark the 60th anniversary of the founding of the state starting Wednesday night. Palestinians see the founding of the Jewish state as a tragic event which they call al-Naqba, Arabic for "the catastrophe."