Sometimes lava will turn into obsidian in the caves and cliffs experiment. I activated the experiment on a world generated in 1.17 and in some places the lava pools turned to obsidian at the bottom of caves.
It appears to be on chunk boarders and It goes all the way down to the bottom of the lava lake. When I first loaded the chunks in the experiment there was no obsidian but after I left the area and came back the obsidian was there.
The video is from the first time I visited the area. Minecraft 2021-10-19 7_53_11 PM is a picture of two of the obsidian formations, one I cleared the lava away so you can see that it extends to the bottom of the lake. Minecraft 2021-10-19 8_02_20 PM is a picture of another obsidian formation in the same cave.
Linked issues
is duplicated by 4
Attachments
Comments 7
it appears this only affects worlds from 1.17 upgraded to 1.18. I have a world with this bug in it. World size is about a gig
This bug still affects worlds, Why was it closed? It's probably just a one off issue when updating that won't resurface, but still.
https://drive.google.com/drive/folders/1plB3FjuT22moAmYwl3FpTIteYw8lS1p_?usp=sharing
This link is to a folder that contains the WIN10 exports of my realms world saved before 1.18 update, and after (Both mcworlds are well over 50mb), as well as a screenshot with the coordinates I was at when I discovered this bug.
I agree with others that this was probably just an artefact from the world conversion, and it's not like it's an issue per se. Just kinda neat and a probably good indicator of what kind of weirdness can occur when you run world generation again on already loaded chunks.
Could anyone provide a copy of the world from before this happened?
On Windows 10 you can use the Export world feature.
On Android or iOS you need to use a file explorer to navigate to Device storage > games > com.mojang > minecraftWorlds
On Xbox or Switch the only way is to upload it to a Realm, and then download the world on Windows 10 or Android/iOS. (Please do not purchase a Realms subscription just to provide a world to us - but if you have a Realm already this may be a viable option if you wish to do so.)
If the world is larger than 10MB you can upload the world to OneDrive or a similar file sharing site, and then share the link.