The phrase "exploding volcano" refers to a volcano that is erupting forcefully, with a lot of power and intensity. It suggests a sudden and strong eruption where the volcano bursts out with hot lava, rocks, and gases. Full definition
That said if you have a bit of leakage it's not the end of the world, it just makes them look even more like exploding volcanoes. (swoonfood.com)
In its earliest geological history the earth's surface was bubbling with activity — with exploding volcanoes, boiling lakes, massive earthquakes, great gulfs opening and closing, whole continents appearing and disappearing. (religion-online.org)
Developed by a team of neuroscientists and video game designers from the University of Lincoln, UK, and the WESC Foundation, one of the UK's leading specialist schools for visually impaired children, the Eyelander game features exploding volcanoes, a travelling avatar and animated landscapes. (sciencedaily.com)