What Not to Do During an Eruption

Picture this: a mountain starts coughing up lava, and your first instinct is to grab your phone for that Instagram-worthy shot. Congratulations—you’ve just entered the Darwin Awards preliminaries.

When Your Brain Tells You to Run Toward the Glowing Orange Death Cloud

In 2018, during Kilauea’s eruption in Hawaii, tourists literally walked up to lava flows to take selfies. Park rangers spent more time playing human traffic cop than monitoring the volcano itself. One guy tried to roast marshmallows on fresh lava—which, turns out, doesn’t work because the radiant heat melts your face before you get close enough to achieve that perfect golden-brown s’more situation.

Here’s the thing about volcanic eruptions: they’re not theme park attractions with safety rails and liability waivers.

The 1902 eruption of Mount Pelée in Martinique killed approximately 30,000 people in minutes. Most died from pyroclastic flows—superheated clouds of gas and rock fragments that travel at speeds up to 450 mph. Running? Pointless. These flows reach temperatures around 1,000 degrees Celsius. Your body would be carbonized before you realized you should’ve left yesterday.

The Ash Cloud Isn’t Just Spicy Air You Can Complain About

Volcanic ash seems harmless enough—it’s just dust, right? Wrong on a molecular level that would make chemists weep. When Mount St. Helens erupted in 1980, people thought they could just drive through the ashfall like a mild snowstorm. Except volcanic ash is actually tiny shards of glass and rock. It turned car engines into expensive paperweights, clogged air filters instantly, and created a substance in human lungs that resembles concrete when mixed with moisture.

Wait—maybe that’s why volcanologists get twitchy when people treat ash like inconvenient snow.

The Eyjafjallajökull eruption in Iceland in 2010 shut down European airspace for six days. Not because authorities were being overly cautious—volcanic ash melts inside jet engines, then solidifies on turbine blades. Several test flights afterward found engines with glass coatings thick enough to cause failure. That’s about as close to flying through a sandblaster as aviation gets.

Ignoring Evacuation Orders Because Your House Has Sentimental Value

During the 1991 Pinatubo eruption in the Philippines, some residents refused to leave despite warnings. They worried about looters. The volcano buried entire towns under lahars—volcanic mudflows that combined ash with monsoon rains to create something with the consistency of wet cement and the charming habit of flowing at 30 mph.

Hundreds died protecting property that ended up under 200 feet of volcanic debree anyway.

Pompeii offers the ultimate historical case study in “should’ve listened to the warning signs.” When Vesuvius erupted in 79 AD, residents had experienced earthquakes for days. Many stayed, assuming the shaking would stop. The pyroclastic surge that followed moved so fast that people were fossilized mid-stride, their last moments preserved in volcanic ash for millennia. Archaeologists found one guy still clutching his bag of coins—which really puts “taking it with you” into perspective.

The Absolutely Genius Idea of Seeking Shelter in Low-Lying Areas Near Rivers

Lahars don’t care about your topographical ignorance. These volcanic mudflows follow river valleys and can occur months or even years after an eruption ends. Mount Rainier in Washington hasn’t erupted since the 1840s, but scientists have mapped lahar paths that would reach Seattle suburbs within hours if it ever decided to wake up. The volcano’s snowcap holds 900 billion gallons of water—add heat, and you’ve got a concrete mixer the size of a small country.

After the 1985 Nevado del Ruiz eruption in Colombia, lahars traveled 60 miles from the summit, killing over 23,000 people. The town of Armero sat in a valley that became a death trap. Survivors described a wall of mud arriving at night, moving faster than people could run, carrying boulders the size of houses.

But sure, that riverbank cabin with the scenic view seems worth the risk.

The absolute worst response? Assuming modern technology makes you invincible. In 1993, volcanologists studying Galeras in Colombia were caught in a sudden eruption. Six scientists and three tourists died. These were experts with monitoring equipment, experience, and PhDs—and the volcano still surprised them. If professionals get it wrong sometimes, maybe don’t base your survival strategy on YouTube videos and overconfidence.

Volcanoes operate on geological timescales where human lifespans barely register. That mountain has been there for hundreds of thousands of years, reshaping landscapes with casual indifference. Your vacation photos? Not a priority in it’s calculations.

Dr. Marcus Thornfield, Volcanologist and Geophysical Researcher

Dr. Marcus Thornfield is a distinguished volcanologist with over 15 years of experience studying volcanic systems, magma dynamics, and geothermal processes across the globe. He specializes in volcanic structure analysis, eruption mechanics, and the physical properties of lava flows, having conducted extensive fieldwork at active volcanic sites in Indonesia, Iceland, Hawaii, and the Pacific Ring of Fire. Throughout his career, Dr. Thornfield has published numerous peer-reviewed papers on volcanic gas emissions, pyroclastic flow behavior, and seismic activity patterns that precede eruptions. He holds a Ph.D. in Geophysics from the University of Cambridge and combines rigorous scientific expertise with a passion for communicating the beauty and complexity of volcanic phenomena to broad audiences. Dr. Thornfield continues to contribute to volcanic research through international collaborations, educational initiatives, and public outreach programs that promote understanding of Earth's dynamic geological processes.

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