Here is a survival island seed which is situated far from any visible mainlaind. Besides being a cool island seed it also got a tunnel system located underneath it. If you dig straight down at the grass you will find it. If you have a look around in the cave you will see the next cool thing, a mineshaft! The seed is filled with surprises and probably more than what has been said so far. Let us know if you find anything else!
Seed: Ace & Tnl
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