Haunted Hill is a mysterious hill in Ninjago located above the village in the valley. It is where the Temple of Airjitzu was formerly located until it was lifted up into the sky by Nadakhan and his Sky Pirates.
The ninja infiltrated the Temple in order to obtain an Airjitzu Scroll. They escaped with it, but Cole didn't make it out in time and turned into a ghost.
While rebuilding Djinjago, Nadakhan removed the Temple of Airjitzu from Haunted Hill, connecting it with the floating landmass, to the awe of Patty Keys and her tour group. Angered by his trespassing, Yang came out to personally confront the Djinn; However, unimpressed, Nadakhan ordered Dogshank to blast the temple with a water cannon, simultaneously cleaning it and forcing Yang and his students to flee.
- "Day of the Departed" (flashback)
- Amber Spiral (mentioned)