first to the islands, , then to iceland and greenland and finally by the year 1000, leif erickson to the shores of north america. so that's the usual picture with other viking age and the image map of the extraordinary warriors and adventurers is the one that we tend to get in our television series and in novels and other sources, and they kind of look like this. if you don't mind putting up the first slide, max, i would appreciate it. they tend to have an appearance rather like -- have you got it there up at the top? there we go. these are warriors from a chess set, a medieval chess set that was discovered on the isle of lewis. i will be made sometime in the 13th century, a little bit after the height of the viking age, but the figure there you see in this ivory chess set, i didn't know by the way thanks to dna evidence, ivory was made from ivory tusks from greenland, from the viking settlement there. but we see that they do their, the man, the warrior biting his shield. kind of an extraordinary, ferocious warriors who came in to come into prominence in norse legend and saga. there