The Forest of Tranquility is one of Ninjago's forests near the Mountains of Impossible Height. The Fire Temple and its attendant volcano are located at the edge of the forest. Deep in the heart of the forest, the Fangpyre Tomb is hidden in the middle of a graveyard.
Most of the wildlife in the Forest of Tranquility is sociable and fairly benign to visitors—in fact, the main threat one faces in the forest is the possibility of having too much fun to ever leave.
During their hunt for the Golden Weapons, the ninja and Master Wu landed in the Forest of Tranquility after using gliders to escape from the Floating Ruins. The group set up camp for the night in the forest, but Kai was tricked into going to the Fire Temple by Lord Garmadon. After Master Wu followed his wayward student, the other three ninja were attacked by Samukai's Skulkin forces, who managed to steal the three Golden Weapons the ninja had collected.
After being exiled from the Hypnobrai Tomb by Hypnobrai General Skales, Lloyd Garmadon decided to release another tribe of Serpentine to combat his former allies. To this end, Lloyd followed the Map of Dens to the depths of the Forest of Tranquility, where he discovered the Fangpyre Tomb and unleashed the snakes within.
After Pythor released the Great Devourer, the Serpentine fled to the Fangpyre Tomb when it became clear that they could not control the monstrous beast. The last of the snakes had barely finished jumping in and sealing the tomb when the Devourer slithered through the forest, knocking over many trees but ignoring the Fangpyre Tomb.
In the past, after having kidnapped Nya, the ninja set off to deliver her to the Skeletons in the forest.
After being chased by Morro, the Destiny's Bounty crashed in the Forest of Tranquility. The ninja set up a campfire there and spent the night until Misako arrived the next morning to translate the three symbols on Wu's staff. The ninja then mounted on Wallopers to head to Stiix while Nya, Wu, and Misako departed in the Destiny's Bounty.
One of the largest and most beautiful woodlands in the NINJAGO world, and site of the Fangpyre Tomb. The Fire Temple is located at the outskirts of this forest. Although wildlife abounds in the forest, including tigers and bears, it tends to be harmless. The forest does indeed exude a peaceful feeling and it can be difficult for a visitor to say goodbye to his surroundings when it is time to go. It was here that the Skeleton Army ambushed the ninja and stole three of the Four Golden Weapons of Spinjitzu.
- 19. "Wrong Place, Wrong Time"
- 46. "Ghost Story"
- Spinjitzu Smash! (non-canon)
- Spinjitzu Smash DX (non-canon)
- Smash Creations (non-canon)
- Spinjitzu Smash Party (non-canon)
- It seems that Milton Dyer created the opposite of this forest in Prime Empire with the Forest of Discontent.
- An herb called Boscus Spiritum grows in the clearings north of the forest, from which Eventuali-Tea is made.