Calima is, according to the apes' Holy writings, where Creation began; where the Almighty gave Semos the breath of life. It is also, according to ape prophecy, where Semos will return to bring peace to their planet. This is how Ari explains the origins of the apes to Leo Davidson, after he has crash-landed on the mixed-up planet of Ashlar: "In time before time, the Almighty breathed life into Semos, the First Ape... but most educated apes doubt if there even was a Semos", and goes on to say that's how they explain their origin. But Krull then says Calima is where Semos will return.