That would have been astronomically expensive given the enormous supply chain needed to produce charcoal to get that iron in those times.
I am sceptical on how they figured out iron stains are pothole fillings. I think much simpler explanation would be everyday items or metal pieces of carts getting stuck between stones.
That would have been astronomically expensive given the enormous supply chain needed to produce charcoal to get that iron in those times.
I am sceptical on how they figured out iron stains are pothole fillings. I think much simpler explanation would be everyday items or metal pieces of carts getting stuck between stones.