Echoes.
For thousands of years, all the different echoes resonate in the ears.
At the beginning, it was thunder. And an incredible massive tremor. It was the continent shaking, the sound of the ocean boiling. Storms swept across the land and sky, and even though the entire institute sank into the ground, it couldn't stop the thunder triggered by tsunamis crashing against mountains. Most people met death in bewilderment and despair, perhaps a mercy, as such a swift death was painless and spared them from facing the suffocating reality post-apocalypse.
