Minecraft wiki entry for Basalt_pillar, associated text: A small basalt pillar.
A large and a small basalt pillar that generated on the edges of a Warped Forest and a Crimson Forest, respectively
Basalt pillars reaching the surface of a lava sea as they did historically.
A pillar cutting through a fossil.
Three pillars flush with the ocean surface as of 20w22a.
Another pillar level with the soul sand ground.