Exit portal

The exit portal (also known as the end fountain) is a structure that enables the player to return to the Overworld, activated upon the defeat of the ender dragon.

Generation
The exit portal always generates at the coordinates, and remains deactivated until the ender dragon is killed.

Structure
The exit portal looks similar to the end portal but differs in its design. Instead of a frame of end portal frame blocks, it has a 7-block wide bowl-shaped frame of bedrock, and a central pillar of bedrock with a torch on each side. A dragon egg generates atop the portal upon defeating the ender dragon.

There are 16 end stone blocks, one under each outer bedrock block, and if mined, they regenerate when the ender dragon is defeated or respawned.

Behavior
If a player goes through the exit portal, the credits roll if entered for the first time, and then the player returns to their spawn point in the Overworld.

If an entity that isn't a player goes through, like falling sand or thrown items, it is sent to the world spawn location.

If a player dies above the portal (for example by flying into the bedrock column with enough momentum) the player goes through and player's items disappear.

The ender dragon flies to the fountain from time to time, and spews dragon breath.

The end gateway portal is made up of the same block and block entity as the End portal.

Trivia
$$, if the player manages to delete all of the end portal blocks in the exit portal, the entire structure regenerates after 5 seconds.
 * If all of the portal blocks have end crystals above (so the fire constantly eliminates the portal), this regeneration process repeats until a portal block successfully regenerates.

Endbrunnen Exit portal Portail de l'End 出口ポータル 출구 차원문 Endportaal Fontanna Endu Portal do End Портал Края 返回传送门