Almost as hope is lost, they come to a high wall, and on the other side... they hear water, trickling gently over rocks; birds singing. The music of life. Above, they can see the branches of a lush tree extending over the top of the wall. Its fruit look delicious. With the help of the other, one manages to climb over the wall and disappears down the other side.
The remaining soul returns to the desert to help other lost travelers find their way to the oasis.