MC-94487Ravines don't naturally cut through sand, sandstone, or terracotta upon generation, but other cave types do.
The bug
In 14w20a, Mojang added caves naturally cutting through sandstone, sand, hardened clay and mycelium upon generation (see https://twitter.com/dinnerbone/status/466887474367954944).
However, this new feature did not extend to the cave generation that spawn ravines, so you still get unnatural-looking formations where the ravine cuts into grass but not other blocks (see image attachment). This is why you never see surface ravines in desert, mushroom or mesa-type biomes.
How to reproduce
Seed: 1 /tp 197 62 -4 70 24
Environment
Java (Version 8 Update 66)
Windows 10.
Linked Issues
- Fixed
Paint
ProfMobius (Thomas Guimbretiere)- 18
- 5
- Confirmed
- cave desert mesa mushroom-island mycelium ravine sand sandstone terracotta world-generation
1.8.9 - 18w07c
1.8.9 15w51b 16w05b 16w06a 1.9-pre4 1.9 1.10.2 16w36a 16w38a 16w39c 16w40a 16w41a 16w42a 16w43a 16w44a 1.11-pre1 1.11 1.11.2 17w06a 17w13a 17w13b 17w14a 17w15a 17w16a 17w16b 17w17a 17w17b 17w18a 17w18b 1.12-pre1 1.12-pre2 1.12-pre3 1.12-pre4 1.12-pre5 1.12-pre6 1.12 1.12.1-pre1 1.12.1 1.12.2-pre1 1.12.2-pre2 1.12.2 17w43a 17w43b 17w45a 17w45b 17w46a 17w47a 17w47b 17w48a 17w49a 17w49b 17w50a 18w01a 18w02a 18w03b 18w05a 18w06a 18w07c- 18w08a
Created Issue:
Ravines don't naturally cut through sand, sandstone, hardened clay or mycelium upon generation, but other cave types do.
In 14w20a, Mojang added caves naturally cutting through sandstone, sand, hardened clay and mycelium upon generation (see https://twitter.com/dinnerbone/status/466887474367954944).
However, this new feature did not extend to the cave generation that spawn ravines, so you still get unnatural-looking formations where the ravine cuts into grass but not other blocks (see image attachment). This is why you never see surface ravines in desert, mushroom or mesa-type biomes.
Environment
Java (Version 8 Update 66)
Windows 10.
Attachments1
![[Mod] redstonehelper](../../../data/avatars/users/10122.svg){kind=small}
![[Mojang] Grum (Erik Broes)](../../../data/assets/gravatar/grum.png){kind=small}
[Mojang] Grum (Erik Broes)relates to
The bug
In 14w20a, Mojang added caves naturally cutting through sandstone, sand, hardened clay and mycelium upon generation (see https://twitter.com/dinnerbone/status/466887474367954944).
However, this new feature did not extend to the cave generation that spawn ravines, so you still get unnatural-looking formations where the ravine cuts into grass but not other blocks (see image attachment). This is why you never see surface ravines in desert, mushroom or mesa-type biomes.
How to reproduce
Sand and sandstoneSeed: 1 /tp 197 62 -4 70 24
Ravines don't naturally cut through sand, sandstone,hardened clayor mycelium upon generation, but other cave types do.Ravines don't naturally cut through sand, sandstone, terracotta or mycelium upon generation, but other cave types do.
![[Bot] Arisa](../../../data/assets/gravatar/mustek2.png){kind=small}
![[Mod] Michael Wobst](../../../data/avatars/users/37868.png){kind=small}
Ravines don't naturally cut through sand, sandstone, terracottaor myceliumupon generation, but other cave types do.Ravines don't naturally cut through sand, sandstone, or terracotta upon generation, but other cave types do.
(As of 15w51b) Looks like cave generation does cut through mycelium, but not snow. Also doesn't cut through packed ice (see the 3 most recently-added attachments)
One other little thing to note is that ravine generation follows slightly different rules than other kinds of cave generation, see MC-94487. I think that ravines will require their own separate fix.
Please provide seed and coordinates.
Here, you can use Seed 1, and just fly a flew hundred blocks north of spawn. Image attached.
Please confirm?
I provided screenshots to show that ravines don't naturally cut through hardened clay or mycelium. I used a customised world to prove the mycelium, details in the screenshot.
Please do not mark unreleased versions as affected.
You don't have access to them yet.
TL;DR: Fixed in 18w08a.
In 18w08a, ravines changed. They don't generate where they did in previous versions (using the same seeds and locations), so I had to find new surface-ravines or would-be surface-ravines to see what they cut into.
Sand & Sandstone:
Ravines now cut through these. Seed: 1
Location: /tp @s -10360 75 39780
Red Sand & Terracotta:
Ravines now cut through these. Seed: -635205980
Location: /tp @s -805 70 -188
Mycelium/Snow Blocks:
Can't find surface ravines or would-be surface ravines in these biomes. Much harder now that we can't use Customised Worlds to generate a world of just that biome. But even if they don't cut through those,
MC-16132exists for that.Conclusion: Fixed in 18w08a.