xylaria said:I have often thought how the aboriginal people of these Isles made fire as horse hoof fungus is common in Scotland but flint is common in south England, and there must of been a time when trade and travel between the two was very difficult.
Well, that's the question, isn't it? We tend to assume that long-distance trade is a more recent development, but I'm not entirely sure... Certainly by the bronze age there was quite a lot of trade going on, and there's no reason to think that trade between Scotland and England was difficult. Also, hoof fungus may have been more widespread, and while there isn't much flint in Scotland, there are other knappable rocks.
I guess the other question is how far back do you want to go?