Hours after an 8.2 magnitude earthquake struck off the coast of northern Chile, scientists claim that an even bigger earthquake could strike in the near future.

A fault line located underneath Chile’s coast has been constantly shifting for the past 140 years causing Tuesday’s quake. Within recent weeks, Chile has seen approximately 50 to 100 smaller quakes.

This recent cluster of activity is now threatening to rupture a different fault line located to the north and south of the recent earthquake. Mark Simons, a geophysicist from Caltech, says that fault line “hasn’t ruptured in 140-odd years.”

Given that Chile is located in the “Ring of Fire” where there is frequent seismic activity, it is only a matter of time until the other fault line ruptures.

“We expect another 8.8-8.9 earthquake here sometime in the future,” said geophysicist, Mark Simons.