Seed ID: -9057352651117540831
This fantastic seed spawns you in a basic plain area, but upon exploring further you’ll reach a series of ravines.
There you will find a stronghold with its very own library, mineshaft, a vast network of corridors, and its own portal room. On top of that, there is also 15 diamonds in clear view inside the ravine.
The seed was found by Panzi_Master (reddit).
This seed works for minecraft version: 1.2, 1.3, 1.4, 1.5