This seed is a survival seed, you spawn in a small island located somewhere in the sea and, of course this seed the same with other survival island it very far from mainland. Inside the island you can find an cave system quite complex can be located in the underneath. Easy to find it by dig straight down at the grass biome, close the spawn. After a while you will reach to the cave system or we can call it is a mineshaft! This mineshaft is unexplored then, if you find anything cool, leave a comment below!!!
Seeds : Ace & Tnl Work in PE ver0.9.0+ or ver0.9.5