The Ancient Mesopotamian (Babylonian) interpretation of the world. HO is the heavenly ocean including Watergate. H1 to 3 is three heavenly spheres and about the same as our declinations. O is the ocean of earth and T its depth. E is the eternal EKUR or ur-hill, which they made sacred by the ziggurats. M is mountains of sunrise and A the mountains of sunset. TR is the world of the dead with its seven walls and P the palace.