In reply to tinytom:
"Access:
From Cherbourg, drive on D904. After the bridge, drive in the direction of Briquebec, continue for three kilometers then turn right on D152 in the direction of Flottemanville. The boulders will be on the right-hand side after one kilometer.
A few boulders are equipped with a bolt so you can top rope on them (32 to 37, with lots of variations)."
There's also a climbing gym in Caen (
http://www.escaladeaventure.com/ ). If you have more spare time head West to Kerlouan at the far end of Brittany, there's about a thousand boulder problems (and counting) littered on the beaches.