Now, I will guide you how to reach to the main section from the spawn. At the spawn you fly up 20-25 blocks then go straight ahead. And soon you will see an medium stone mushroom( “mushroom mountain, “mushroom” overhang ). In short, that is a huge stone have a mushroom shaped. Moreover, in there have lot of cave and complex tunnel that leading you to the many cave system, nice place to explore.
Minecraft PE Seed: pocket edition – “Mushroom” Overhang
Quite of normal seed, you spawn in a forest biome. Around you is lot of trees and stone. A suggestion is playing this seed on creative mode first because from the spawn to the main section of this seed it quite far and take you a lot of time.
Seeds : pocket edition Work in PE ver0.9.0+ or ver0.9.5