"Attack on Titan" is one of my favorite animation. The story background is about a world with "Titans". About 100 years ago, Titans suddenly showed up and killed almost all of people in the world. The survivers built 3 layers of giant walls to protect themselves. Then the survivers and their offsprings have lived inside the walls with fake peace about hunderd years. One day, a 60-meters Titan and an armored Titan suddenly showed up. They smashed the wall, so bunches of Titans flocked inside the wall and ate lots of people. And mother of main character ─ Eren Yēgā, was eaten by a Titan in front of him. After that, he made decision to join the army with his friends. He swears that he will kill all the Titans over the world...
Now you can admire a real "Titan" in Taiwan. The Titan is hidden in this mountain area. You can follow the trail(and trial) to find the Titan. This area is really far away and not easy to access. So we set it as terrain 3. On this trail you can find some caches and find the Titan at the end.
This cache is a trial of rock. In the animation, the Titans and the army usually use rock as weapon. Now you have to pick up the right rock to find the cache!