In 326 BCE at the edge of the known world Alexander the Great faced his greatest defeat not from enemy armies but from his own loyal soldiers who, after years of endless battles and 8000 miles from home, reached their limit at the Hyphasis River in India where rumors of a massive force with 200000 fighters and thousands of war elephants had spread; Alexander spent three days in deep contemplation in his tent and when he emerged he listened to his men and ordered the building of twelve massive stone altars to mark their farthest reach thus ending his endless eastern march and foreshadowing the harsh return through the Gedrosia Desert.