Under the Tree of Life, the intertwined roots formed chains of undulating hills.
The huge mountains were occupied by functional buildings for the Seven Rings Holy Tower, whereas the small hills were packed with free markets for Demon-Hunter sorcerers.
After winning a war among worlds, sorcerers would return with their bounties and rewards. Usually, they would carry rare items from the other world to sell to other sorcerers. The most common things they brought back were captives and slaves.