Richard Hammond has to climb Claerwen dam in a sixty four year old Land Rover. Can he do it? From Top Gear, Series 22 Episode 4. Subscribe for more awesome Top Gear videos: www.youtube.com/subscription_center?add_user=Topgear Top Gear YouTube channel: www.youtube.com/topgear TopGear.com website: www.topgear.com Top Gear Facebook: www.facebook.com/topgear Top Gear Twitter: twitter.com/BBC_topgear This is a channel from BBC Worldwide who help fund new BBC programmes.