Prairie!
When you in active volcano scene, the bottom left green arrows, press the right arrow a lot really fast and it will skip the desert and go into prairie. There are no lvls, just the background. It is still cool though.
(It may take a couple tries, it took me like 5! Haha!)
Here are some screenshots:
Name: pocotaco Lvl: 40
Dragon Badge.
Crystal Lvl: 40
Devil Lvl: 40
Leshy Lvl: 40
Bigeye Lvl: 34
Angelo Lvl: 29
Roco Lvl: 29
Lava Lvl: 27
HK
PocoTaco: S93
Phayse: S99