End spike

Obsidian Pillars (also known as Obsidian Spikes or Obsidian Towers) are generated structures in The End that are made of Obsidian.

Generation
Obsidian pillars generate naturally in the End.

Structure
Obsidian pillars are composed of obsidian, and a single Ender Crystal on top of each pillar. They are approximately circular, with a diameter of 3 to 9 blocks, and a height of anywhere from 6 to 37 blocks. Each chunk has a 20% chance of generating an obsidian pillar.