Die Wand Aus Blutigen Kopfkrabben

The Wall began rotting horrifically.

Die Wand Aus Blutigen Kopfkrabben (Galactic English- The Wall of Bloody Headcrabs) was a massive Omniversal duplication glitch which occurred on the border of Germany and Austria in 155 BB, during the Great META War. After one German soldier shot and killed a Xennish Headcrab, it suddenly was two, and then four, and continued duplicating as such, until it reached astronomical levels of Headcrab Corpses. They piled into a wall which was nearly eighty feet tall, forty-six miles long, and contained roughly sixty trillion dead Headcrab duplicates. This error was corrected when the Entity Limit on Earth 2 reached the maximum value, freezing the duplication. As a result of this, no human babies were born for nearly thirteen years, until the corpses had rotten beyond the point of 'Entity' status.

The wall persisted for several millenia.