Social media videos showed people running into the streets as bright orange flames and smoke spewed into the sky.

First appearing around 1953 near the Salton Sea, the Niland Geyser was once harmless. Then in 2015, it began moving. At times traveling up to 10 feet per month, the mud volcano crossed railroad tracks ...

Add Yahoo as a preferred source to see more of our stories on Google. Stunning social media videos erupted from the northern coast of Colombia on Feb. 25, when a mud volcano exploded, shooting flames ...