This is the correct layout for a mob farm bubble elevator. More info in comments : r/Minecraft
10 Minecraft Projects on Paper ideas | minecraft projects, minecraft, minecraft farm
Can someone give me tips on building a AFK skeleton/zombie grinder? Can't stay AFK at my current, think the dropper is to far away from the spawner. : r/Minecraft
Skeleton Spawner, XP farm or AFK farm. Minecraft Map
Tutorials/Monster spawner traps – Minecraft Wiki
Minecraft Cave Spider Spawner XP Farm - Super Easy Design! - YouTube