Bava Batra 99: The Keruvim

All you want to know about the cherubim/keruvim, and then some (because of there's dispute). What is their wingspan? What are their positions? Which way are they facing? Plus, 3 mishnayot: Beginning with the location of one home that had a cistern on the other side of another party's home. Also, the various ownership of property, from private to public to the king's road to that of a graveyard.