Tested On:1.16 (Nether Update).
Minecraft Edition:Java
Biomes:Forest, Birch Forest, Mountains, Swamp.
Natural Structures:Caves.
Generated Structures:Witch Hut, Mineshaft.
*the number of biomes, natural structures, and generated structures will increase as you explore the world (obviously).
Descriptions, Description:

If you’re looking for a seed that focuses on mining-first then this probably the seed you’re looking for, It has 3 different Mineshafts and they are locating near the spawn point. But before you try this seed on survival mode, It always better to try a seed on spectator/creative mode first. Another thing I want to mention is that each Mineshaft may not directly be connected. But besides all that you can still find great loot/ores down there. Happy mining.

I will continue to update this seed if a new version of Minecraft coming out. So stay tuned if you are interested in this seed.

Update: I’ve updated this seed from 1.15 to 1.16. I also have added a structure map.

Coordinates, Coordinates:

World spawn point XYZ: -30.492 77.00000 9.664
*may not accurate.

Witch hut XYZ: -172.409 69.00000 84.645

Mineshaft #1 XYZ: -112.609 77.00000 -41.676

Mineshaft #2 XYZ: -219.495 64.00000 -205.716

Mineshaft #3 XYZ: -316.469 67.00000 -306.487

Important Notes., Important Notes:

I recommend you try this seed on spectator mode first.

All the generated structures locations are drawn in the structure map below.

Screenshots, Screenshots:
Structure Map that shows the location of Generated Structures

The Structure Map. It shows the location of each Generated Structures.

Witch Hut Minecraft

The Witch Hut (located in the southwest from the starting point).

Mineshaft Minecraft

Mineshaft #1 (look the structure map).

Mineshaft Minecraft

Mineshaft #2 (look the structure map).

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