First I would suggest reading the nether and nether portal wikis. Those are very helpful.
All portals have a link to the overworld. The nether is a 1/8 scale of the overworld. Meaning that for every one block you travel in the nether, you travel 8 blocks in the overworld. This allows players to create portals to different locations in their world and cut down on travel time. For instance, I have several farms that are more than 1000 blocks from my main base. I use portals and tunnels in the nether to get to them so I only have to travel less than 200 blocks to get to them instead of the 1000. Much faster.
As for you achievment and portals from the nether: The portal you created in the nether created one in the overworld when you went through it. The new portal generated in a stronghold. Stongholds are in the overworld and house an end portal. The end portal will take you to the end so you can fight the ender dragon. Strongholds are a maze of rooms and one of them has the end portal. It just happenstance that your portal generated there.
I'm not sure why going back through that portal would have taken you back to your first portal other than a glitch or portal linking issues.
You created portal in overworld (Portal A) and went through.
Game created initial portal in Nether (call it portal
You explored around, found nether fortress and built a portal in there (Portal C)
When you went through it, game created a new portal in overworld, inside a stronghold (Portal D)
But when you went back into portal D, you ended up in the nether at portal B? That is quite freaky.
It would be interesting if you took coordinates at each of these portals (X,Y,Z) and posted them here.
Now Strongholds contain a PORTAL to End - usually an incomplete one, which you need to complete using eyes of Ender. So you are extremely unlikely to stumble into End by mistake.
Yes, scorrp, that’s right! Only portal C wasn’t quite IN the fortress but closer to it. I find the whole thing really freaky, surely the chances of that happening are really low? [/p]
Good to know I’m not going to somehow stumble into the end, though, thanks! [/p]
[p]
I took some screen shots of the various portals so I’ll post the coordinates.[/p]
[p]
First portal in overworld (Portal A) -2508.712 / 69 / -1203.510[/p]
[p]
Game created initial portal in Nether, portal B -313.239 / 66 / -144.978[/p]
[p]
Portal I created closer to the nether fortress (Portal C) -307.135 /98 / -120.7 that leads to.....[/p]
[p]
Inside the stronghold (Portal D)-2452.286 / 22 / -970.298 which leads back to B[/p]
I'm guessing that the stronghold was under an ocean so that there was nowhere else to put the portal, otherwise it would probably have been put higher up, like on the surface.
Your portals A and B are very closely matched, so B will always take you to A and A to B.
Portals C and D are almost perfectly matched horizontally but vertical distance is 76. (98 - 22)
Distance in Nether from point matching D to B is:
sqrt((313-307)^2 + (145-121)^2 + (66-22)^2) = 48.
So yes, portal B is the preferred destination from D.
If you want a portal in Nether that will link to stronghold one, you need to build it at about same horizontal coordinates, but closer to lava level (y 32)
nvm
First I would suggest reading the nether and nether portal wikis. Those are very helpful.
All portals have a link to the overworld. The nether is a 1/8 scale of the overworld. Meaning that for every one block you travel in the nether, you travel 8 blocks in the overworld. This allows players to create portals to different locations in their world and cut down on travel time. For instance, I have several farms that are more than 1000 blocks from my main base. I use portals and tunnels in the nether to get to them so I only have to travel less than 200 blocks to get to them instead of the 1000. Much faster.
As for you achievment and portals from the nether: The portal you created in the nether created one in the overworld when you went through it. The new portal generated in a stronghold. Stongholds are in the overworld and house an end portal. The end portal will take you to the end so you can fight the ender dragon. Strongholds are a maze of rooms and one of them has the end portal. It just happenstance that your portal generated there.
I'm not sure why going back through that portal would have taken you back to your first portal other than a glitch or portal linking issues.
Let me get this straight:
You created portal in overworld (Portal A) and went through.
Game created initial portal in Nether (call it portal
You explored around, found nether fortress and built a portal in there (Portal C)
When you went through it, game created a new portal in overworld, inside a stronghold (Portal D)
But when you went back into portal D, you ended up in the nether at portal B? That is quite freaky.
It would be interesting if you took coordinates at each of these portals (X,Y,Z) and posted them here.
Now Strongholds contain a PORTAL to End - usually an incomplete one, which you need to complete using eyes of Ender. So you are extremely unlikely to stumble into End by mistake.
Yes, scorrp, that’s right! Only portal C wasn’t quite IN the fortress but closer to it. I find the whole thing really freaky, surely the chances of that happening are really low? [/p]
Good to know I’m not going to somehow stumble into the end, though, thanks! [/p] [p] I took some screen shots of the various portals so I’ll post the coordinates.[/p] [p] First portal in overworld (Portal A) -2508.712 / 69 / -1203.510[/p] [p] Game created initial portal in Nether, portal B -313.239 / 66 / -144.978[/p] [p] Portal I created closer to the nether fortress (Portal C) -307.135 /98 / -120.7 that leads to.....[/p] [p] Inside the stronghold (Portal D)-2452.286 / 22 / -970.298 which leads back to B[/p]
Stronghold portal would like to go back to the Nether ideally at -306, 22, -121 (divide X and Z by 8)
Portal B is something like 50 blocks away from that ideal location.
Portal C is about 70 blocks away from that ideal location (because of the Y-factor, even though X and Z were spot-on.)
So Portal B was preferred.
I'm guessing that the stronghold was under an ocean so that there was nowhere else to put the portal, otherwise it would probably have been put higher up, like on the surface.
Just testing.
Yes indeed stronghold must be under ocean.
Your portals A and B are very closely matched, so B will always take you to A and A to B.
Portals C and D are almost perfectly matched horizontally but vertical distance is 76. (98 - 22)
Distance in Nether from point matching D to B is:
sqrt((313-307)^2 + (145-121)^2 + (66-22)^2) = 48.
So yes, portal B is the preferred destination from D.
If you want a portal in Nether that will link to stronghold one, you need to build it at about same horizontal coordinates, but closer to lava level (y 32)