Start a single player game in the campaigns section. Play the Ascent of Egypt Learning Campaign untill you reach the Trade scenario. If you want to view it the hard way, send units to the very south corner of the map. To view the egg the easy way, hit enter, type "Reveal Map" without quotes, hit enter twice, type "No Fog" without quotes, and hit enter. This should have revealed the entire map and removed the fog of war. View the southern corner of the map, and written in sand are the letters "RIP." This is probably put in the game in memory of someone the level creator knew.