In short
Around 74,000 years ago, Mount Toba in Sumatra erupted with a force that dwarfed any volcanic event in recorded history, ejecting ash across the globe and likely triggering a volcanic winter that lasted years. The eruption was so severe it may have reduced the human population to just a few thousand individuals, creating a bottleneck in our species' genetic record.
How it unfolded.
The five-minute version
What actually happened.
Mount Tai is a mountain of historical and cultural significance located north of the city of Tai'an. It is the highest point in Shandong province, China. The tallest peak is the Jade Emperor Peak, which is commonly reported as being 1,545 meters (5,069 ft) tall.
As it was happening
6 voices, 182622 days.
One beat at a time. Click any dot on the timeline to jump, press play for autoplay, or use the arrow keys to step.
Mount Toba supervolcanic eruption
Mount Toba in Sumatra, Indonesia erupts with a magnitude of VEI 8, ejecting ash and pyroclastic material across a massive area and initiating rapid climate changes.
Voices from this moment (1)
Mount Toba supervolcanic eruption
Jan 1
“Mount Toba in Sumatra, Indonesia erupts with a magnitude of…”
As it was happening
6 voices, 182622 days.
Day 0 · January 1, 74001
Mount Toba supervolcanic eruption
Mount Toba in Sumatra, Indonesia erupts with a magnitude of VEI 8, ejecting ash and pyroclastic material across a massive area and initiating rapid climate changes.
“Mount Toba in Sumatra, Indonesia erupts with a magnitude of…”
- Mount Toba supervolcanic eruption, Jan 1
Day 1 · January 2, 74001
Atmospheric ash column formation
Ash column reaches approximately 80 kilometers in height; pyroclastic flows devastate the immediate region with temperatures exceeding 300 degrees Celsius.
“Ash column reaches approximately 80 kilometers in height;…”
- Atmospheric ash column formation, Jan 2
Day 152 · June 1, 74001
Global ash dispersal
Volcanic ash spreads across South Asia, the Arabian Peninsula, and reaches Africa; atmospheric opacity reduces solar radiation reaching Earth's surface.
“Volcanic ash spreads across South Asia, the Arabian…”
- Global ash dispersal, Jun 1
Day 365 · December 31, 74001
Caldera stabilization
The eruption chamber collapse creates a massive caldera that will eventually fill with water, eventually forming Lake Toba.
“The eruption chamber collapse creates a massive caldera…”
- Caldera stabilization, Dec 31
Day 1827 · January 1, 73996
Onset of volcanic winter
Global temperatures drop by an estimated 3 to 5 degrees Celsius; this cooling may persist for several years, disrupting ecosystems and human food sources.
“Global temperatures drop by an estimated 3 to 5 degrees…”
- Onset of volcanic winter, Jan 1
Day 182622 · January 1, 73501
Recovery phase
Ash from the atmosphere gradually settles; climate begins gradual return to pre-eruption conditions over centuries. Human populations remain severely reduced.
“Ash from the atmosphere gradually settles; climate begins…”
- Recovery phase, Jan 1
Where it happened.
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Sources & citations.
Sources
Where this came from.
Every claim on this page traces to a public, license-clean source. We don't asterisk well.
Wikipedia
1 source- 1.Mount Tai
en.wikipedia.org