Talking about rafts, pig of a job sailing a raft down the coastal waters of Wales. Sea travel is a bit like flying, only dangerous when near land (mostly anyway).

Proper boats would not have been an impossibility even in the stoneage. The builders of Stonehenge knew about mortice and tenon joints (nothing to do with Morroco) a carpentery joint. For years I thought that boatbuilding required metals, lately I've concluded that the existance of the bluestones on Salisbury Plain screams out "boatbuilders".

PS Don't need a boat to cross a river, use stone support logs and stone fulcrums.

Regards Gordon