my next destination is japan's fourth biggest island, shikoku, where the roads become narrow and windingd by dense forests of cedar trees. the views from up here are simply stunning. we're now in the mountains on the western side of the island. the aia valley. in the 11th and 12th centuries, these remote highlands were a perfect hideaway, literally. right. i'm now going to relive a bit of ancient japanese history. we're really inland and remote here up in the mountains. and this is where disgraced or defeated warriors would escape to. so, this is the legendary kasra bashi bridge. apparently about 1,000 years old, made of vine, wisteria. here we go. it's supposed to be really dodgy to cross. but, hey, if warriors did it before, so can i. the plan would be you would get across this bridge and then cut the vines so that the enemy couldn't catch you. mind you, getting across the bridge in the first place was enough. the gap between these planks of wood here is, i'd say, large enough to have your foot go through. look at that. they're sprinting across here! you did very well. so, these guys a

my next destination is japan's fourth biggest island, shikoku, where roads become narrow and windinge a bit of ancient japanese history. we're really inland and remote here up in the mountains, and this is where disgraced or defeated warriors would escape to. so this is the legendary kazurabashi bridge, apparently about a thousand years old made of vine and wisteria — here we go, it's supposed to be really dodgy to cross. but hey, if warriors did it before, so can i. the plan would be you'd get across this bridge and then cut the vines so that the enemy couldn't catch you. mind you, getting across the bridge in the first place is hard enough. the gap between these planks of wood here is, i'd say, large enough to have your foot go through. look at that, they are sprinting across here. you're doing very well. so these guys are using the side railings which is very sensible, but i think the real samurai way is to walk across through the middle, so i'm going to do that. 15 metres up, 150 feet across, this bridge is today reinforced with steel girders and rebuilt every two or three years.