Area 15 is the main hub and third room of Elephant Quest. It features 5 elephants, 4 doors, and 1 balloon.
(Top) Area 11
(Left) Area 19 (locked; green key needed)
(Bottom) Area 22
(Right) Area 16 (locked; yellow key needed)
The Blue Balloon (right next to Bob, as he is a balloon brother)
None, but there are spikes near the left door.