If you build it on the ground, the mobs won’t spawn in it because they will instead spawn around you or under you in caves. Making the spawner ... of making a mob farm in Minecraft.

Efficient setups include mob farms for XP and rare ... the iron through hoppers. The farm offers a steady supply of iron without mining. To farm in Minecraft isn’t just about food.

If you've ever found a mob spawner in a dungeon, ESPECIALLY a Skeleton spawner, you owe it to yourself to make ... Minecraft.