Enormous tomb beneath NINJAGO City in which the Stone Army was consigned after the First Spinjitzu Master split the land in two halves. Much later, the vault was stumbled upon by the Serpentine as they were attempting to burrow beneath the city. Venom dripping from the Great Devourer awoke the Stone Warriors and they went on a rampage. A carving on the outside of the tomb depicts Skales, indicating he was the one destined to free the Stone Army.

Ninja Dojo
Elemental Blade
4.5 Bricks
Inventing Gadgets