National Geographic Channel. One of the most deadly places on earth is the “Ring of Fire,” a roughly 25000-mile-long chain of volcanoes and earthquake zones that surrounds the Pacific Ocean. Now, NGC reveals some startling new evidence that suggests it may be getting more dangerous. With more than 1 billion people under threat from explosive volcanic eruptions and devastating mega-earthquakes, NGC follows the scientists racing to understand the danger and what we can do to protect ourselves against its future fury.