The cavern dimension is a dimension that is filled with caves and with many veins of ores found.
It is an endless cavern. Basically a cave you found and you lost the exit. It's layers are more deeper than the overworld. Emeralds can be even found there. It is easy to get lost there. The compass and clock won't work.
The Portal:
Make it like the nether portal but replace the obsidian with lapis and the edges with iron. No flint but lava
on the top of the inside frame. The portal will look like a nether portal that is red.
Mobs:
as usual but slimes don't spawn in the bedrock level.
Ores:
You'll find lots of ores than usual. Iron is frequently found in the dimension. Diamonds are still the same rate as the overworld. I might even add a new ore that is found only the this dimension.
Bedrock: It's at the top and bottom. if you look at the void at the top, it's dark.
It is an endless cavern. Basically a cave you found and you lost the exit. It's layers are more deeper than the overworld. Emeralds can be even found there. It is easy to get lost there. The compass and clock won't work.
The Portal:
Make it like the nether portal but replace the obsidian with lapis and the edges with iron. No flint but lava
on the top of the inside frame. The portal will look like a nether portal that is red.
Mobs:
as usual but slimes don't spawn in the bedrock level.
Ores:
You'll find lots of ores than usual. Iron is frequently found in the dimension. Diamonds are still the same rate as the overworld. I might even add a new ore that is found only the this dimension.
Bedrock: It's at the top and bottom. if you look at the void at the top, it's dark.