we are coming down now the high coming down now from the high pamirs that, by pamirs towards kashgar.'s biggest that's one of the biggest glaciers china. glaciers in in china. it's a 7000 that mountain. wow. 7000 foot at that mountain. wow. 7000, 7000 7000m litres footage. >> now, stanley and his son max. and they're kind of going through. >> oh, look, that's me on the yak road. that is me mounted on a yak. and actually , it's a yak a yak. and actually, it's a yak race. you could say it's a yak yak yak . yak yak. >> i mean, of all of the things you've achieved in your career so far, sadly , i think yak so far, sadly, i think yak racing is probably up there. why should care about marco polo? should we care about marco polo? >> was fantastic. >> because he was fantastic. he was set off from from was a man who set off from from venice with his uncle and his father, set off in 1271. father, and he set off in 1271. it took him four years to reach china . and he four years, four china. and he four years, four years, four years. well, he spent one year, for example , in spent one year, for e