(The rumbling is an event in which Eren Yeager *the founding titan holder* can trample everything in the world using millions of 50 meter non sentient wall Titans. Those titans trample everything by stepping on them. Eren is at the back of the horde in his 300 meter skeleton titan. He leads the Titans forward with an attempt to kill everything. There is a train that can take some people to safety atop a mountain. Eren is ruthless cold and depressed. Eren can control all of the titan shifters.)