Castle of the Tortoise

The Castle of the Tortoise was one of the strongest Crab castles in the border area with the Shadowlands, in an era which predated the Kaiu Wall. It was known by those who served there as the Shell of the Crab. Kaiu Engineers used the Shell to develop and test new defensive techniques, and sometimes deliberately enticed Shadowlands forces into attacking it.

Fallen
In the late 4th century, two Taint-corrupted Kaiu engineers deactivated the castle's defenses and opened its gates, allowing a force of less than one hundred Lost to capture the castle in a single night. The Crab Clan Champion himself commanded a siege of the fallen castle. After two months of preparations, began the so-called Battle of the Tortoise, which lasted three weeks before it was taken the Crab. The building was so tainted that the Crab razed it to the ground. Those engineers who survived the battle were granted the title of Kaiu Siege Masters.