Entry location: Valley of The Kings
Play the level Valley of the Kings. At the end of the level you come to a place where there is a wooden bridge. Press the ~ button and give the cheat Please Fly. Fly to the other side of the wooden bridge and land there. You will see a cave in front of you.Enter the cave and you will reach to a secret level known as Moon Mountains. Flying is needed because if you walk on the wooden bridge it will break and you will fall in the water and reach the Oasis level.
Submitted by Adil Manzoor & Syed Mursaleen