Minecraft Java Edition 1.17

1.17, the first release of the Cave Update is a major update to Java Edition released on October 15, 2021. This update overhauls the caves by adding more ores, generated structures, mobs, blocks, and other things.

Stalagmite

 * Can be found in y 10-20, same with lava.
 * It is found with sand, lava, and new liquid called mud.