These stresses may cause earthquakes and tsunamis. Each of these megathrust earthquakes also spawned tsunamis in the Pacific Ocean. The region is prone to natural disasters like annual floods and frequent mild earthquakes. The region is geologically active with landslides and earthquakes. Mexico has a long history of destructive earthquakes and volcanic eruptions. El Salvador has a long history of destructive earthquakes and volcanic eruptions. Natural hazards include destructive earthquakes and cyclones. It was originally invented for characterizing the seismic echoes resulting from earthquakes and bomb explosions. Mountains and valleys form due to tectonic collisions as well as earthquakes and chasms. This information is important to consider when reacting to future earthquakes and other natural disasters. This is the cause of New Zealand's numerous earthquakes and volcanoes. In case of extreme events like earthquakes, wildfires etc. This has traditionally been attributed to calamities such as plague, earthquakes and Slavic invasions. Tremor occurs deeper on the subduction interface than the locked area where megathrust earthquakes occur. The resulting earthquakes and volcanism destroy the City of Gold.