When gas pressure becomes strong enough, it pushes muddy slurry upward through cracks in the Earth’s surface. This creates bubbling pools, cones, or even large eruptions. In this case, the UNGRD said ...

Learn more about the Echinus Geyser at Yellowstone Park, which recently erupted, but may not sustain into the summer.

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

A mud eruption in Sidoarjo in Indonesia, sometimes known as Lusi, took place in 2006 and it continues to erupt, Manga said.