There are many things in the Bible that we in our physical understanding can never hope to understand.
And when God reveals truth to you, no matter how convincing your words may be unless God has prepared the heart of others to receive that truth it will remain foolishness to them.
Is it possible that when the Bible refers to the four corners it is referring to the four farthest points away from each individual regardless of where they are?
When we look at a globe and consider North, South, East and West, do these points change as we rotate the globe? Are not these points always up down right and left?
God will never give us more light then we are prepared to accept and walk in.
God Bless
Jerry the Berlin Bear