Amanda Angelika wrote:

In terms of N,S,E,W alignment they could have easily made a compass using
some loadstone tied to a wooden stick floated in a pool of water. Or simply
used the North Star. What is more difficult though is getting something
close to the centre of the Earth's Land mass.

But it isn't. That was just something made up in some book.

And is isn't the 'centre of earth's landmass' it was some arbitrary
points that they were supposed to be half way between - but actually
aren't.