Uploaded November 2022 | Updated September 2026, 2 days ago

---

Simplest self repairing cobblestone wall in Minecraft Java. Only 4.5 Blocks per tileable segment, it uses only:
1. Lava
2. Waterlogged Mangrove Roots
3. Redstone Dust
4.5. A Piston and a half (3 pistons for every 2 segments)

Works In Java (not Bedrock) because it relies on Quasi-Connectivity.

Just connect it to a 3 tick Redstone timer, and you have an effective self-building cobblestone wall.