The hole labeled v is for the zombie villager to fall into. The total drop should be at least 3 blocks but not deep enough to harm the zombie villager too much. The zombie villager should fall into a 1×1 space with a closed fence gate as an exit for the cured villager. Elsewhere, you would have stairs going down into a room from which you can
Iron golems also spawn in villages having at least 20 beds and 10 villagers. The golem attempts to spawn in a 17×13×17 volume, ±8 blocks horizontal and ±6 blocks vertical from the village's center block, which can be (but isn't necessarily) a bed pillow or a bell. First, X and Z coordinates are randomly chosen within the spawn volume, then
minecraft:spawn_skilled_adult: Zombie Villager has spawned as skilled adult: 1.16.0: minecraft:add_biome_and_skin: Zombie Villager has added Biome and Skin: 1.16.0: minecraft:become_cleric: Zombie Villager has become a Cleric: 1.12.0: from_village: Zombie Villager is from a village: 1.14.0: minecraft:entity_transformed: Zombie Villager has
20% of hoglins spawn as babies. Hoglins spawn in Peaceful mode, but are passive to players. Drops [] Adult hoglins drop when killed: 2–4 raw porkchop (cooked porkchop while on fire). The maximum amount is increased by 1 per level of Looting, for a maximum of 7 with Looting III. 0–1 leather. The maximum amount is increased by 1 per level ofBased upon the wiki and my experience, zombies can spawn anywhere in a village during a siege (a different kind of zombie spawn than regular spawning). To avoid the issues of siege, I am changing my traps to include iron golems in areas where villagers are permanently trapped. My villager traps used to be 1x1 now they are 2x2.
It could even happen in mushroom biomes or if /gamerule doMobSpawning is false. The game will make 10 attempts to spawn a zombie within a 17x7x17 area centered on a block within the village's cylindrical radius, at the same Y level as the village center. Zombie pigmen can spawn from nether portals in the Overworld.
Of course, on other side of things if one does take a bit of time and resources to fortify a village with walls and light the area with torches/lanterns, the zombies never end up being an issue (especially after having 10 or more villagers that begin to spawn in Iron Golems for free) one can be certain about never having an issue with