You are the old assistant of the lost scientist named Ivan, you are named Dr. Francisco. You plan to figure out why and how your old partner had vanished. And why the hell all the humans have been hiding from a thing they caused.
You step out of the safety bunker, and you step in what used to be the tiny crystal you watched over.. now being a massive mile wide miles deep cavern of the same crystals in various huge sizes..
You walk around the massive pit in the center to avoid falling, and manage to make it to the last of the remaining normal facility. The Cafeteria, The elevators, The garden, some of testing rooms, the reveptions desk, and the warhead rooms were still in tact. Conveniently the post important and fragile parts.
What do you do now?