As I was replaying the ascent of Egypt campaign, I decided to redo the trade mission. I 
destroyed my dock and placed a new one on the other side of the map (as far away as you 
can get from the Libyans) to increase trade value. I then proceeded to destroy my only 
ally. Once that was done, I started collecting everything I could from the island. It
was then that I realized (right where the elephants were) that on the ground, there were
three letters written in the dirt, surrounded by grass. Those three letters, in order, 
are RIP. A tribute to your dead ally.