Vortex Passé [Vortex Past]

On July fifteenth, 1989, researchers discovered some strange symbols engraved on the inside of a historical cave situated near the equator. After a series of sample analysis, no element retrieved from the cave compares to anything we’ve found so far on planet Earth. In the past few months, some geologists from around the globe have recorded many inexplicable natural phenomenons. According to their predictions, if the pattern continues, we could fall victim to the destruction of planet Earth. Your mission is to travel in time and return to the past at the estimated date to intercept the implantation of these destructive objects. The human race is counting on you.