How were property lines known / created back in the old days when huge lots of land were owned / claimed?

Question

How were property lines known / created back in the old days when huge lots of land were owned / claimed?

In: 89

Answer 1

In Land by Simon Winchester, it is posited that, in the early days of farming, natural field boundaries were formed at the edges of the tilled land, so each farmer knew where their field ended and the neighbour’s began. T’was a simpler time.

Also chimes with the Proverbs quote commented elsewhere on the post.