End Portal, Minecraft Bedrock Wiki

The End Portal is a Portal added in Update 0.9.0, and became functional when Update 1.0 was released. Once activated, it teleports the Player to The End, which is an island of End Stone with Endermen. End Portals are always located within Strongholds, in their own "Portal Room." These "Portal Rooms" are hidden among the maze of other rooms within a Stronghold. There is only one Portal room per Stronghold. The End Portal Frames with the Eyes of Ender have different Block IDs. The End Portal room

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