This seed has a rare mesa biome and a swamp biome to make it even more unique. The best part of the seed, though, lays just beyond the swamp in the second section of the mesa. There you can find an abandoned mineshaft with chest minecarts out in the open that have a chance to contain diamonds. That alone makes this seed worth it.
Minecraft PE 0.15.X Seed: -1351238963
The Mesa Biome: Part 1
You spawn in a forest, but if you walk straight forward, you’ll see the first part of the mesa biome. This biome is known for its colorful terrain. It’s made up of mostly stained clay and some red sand.
Mesas also have gold at any height or depth. In other biomes, you need to go deep to find it, but not in these biomes. Almost any cave with stone has a chance to contain gold.
The other benefit of this biome is in the second part of the mesa, but first, you have to travel through the swamp.
On the right side of the mesa sits the swamp biome. Swamps have murky water and trees covered in vines. The swamp biome is the only place you’ll find witch huts and blue orchid floors that add a pop of color in the dark biome. It’s also one of the two biomes that spawn fossils deep in the ground. Above ground, it’s one of the biomes that spawn giant mushrooms.
You can explore the swamp further for yourself if you’d like to see if you can spot any of these structures.
The Mesa Biome: Part 2
If you continue across the water through the swamp, you’ll come to another patch of the mesa. This mesa has an abandoned mineshaft not too far into the red sand area. You’ll find two square sections of dirt (as pictured) and rails to the right of that. As you continue forward you’ll find an area full of rails and mineshaft openings. It also has several chest minecarts out in the open.
Now here is the frustrating part. Every time this seed is spawned, it doesn’t spawn the same chest minecarts. The first time I spawned this seed, one of the minecarts in this area had diamonds in it, but the next few times I spawned the seed, it wasn’t there or had different contents. You may want to respawn this seed a few times to see if you can end up with a chest that has the diamond.
Explore the rest of the seed to see if you can find any other cool areas too!