Nevado del Ruiz is a volcano located in Colombia. There are fears that this volcano could erupt again and cause terrifying damages and deaths.
The ice-capped Nevado del Ruiz covers more than 120 miles squared in central Colombia.
It has shown significant activity in recent weeks, leading to the issuing of a yellow eruption warning by The Colombian Geological Service.
In November 1985 a huge eruption there caused four lahars to unexpectedly speed down the volcano at up to 18.6 miles per hour, killing 23,000 people.
It was the worst eruption in South America’s recent history and the fourth worst in the world.
The town of Armero, 30 miles from the base was left with no warning and little time to prepare or evacuate.
Colombian officials were at the time slammed for not heeding warnings from volcano experts about the mud flow risk.
There have been several toxic ash cloud emissions from the volcano since May 19.
The Colombian Geological Service also noted volcanic activity and tremors on the morning of May 22, when a 1.3km ash cloud blew at 2.35am local time, followed by a bigger 2.3km cloud at 5.50am.
It caused the closure of La Numbia Airport. There were further cloud bursts three days later.
There has yet to be a full-scale eruption, but disaster exports are monitoring activity and it is believed magma is rising inside the 3.3mile-high peak. The combination of the volcano and glaciers are what make it so dangerous.
Jerry McManus, of Columbia’s Lamont-Doherty Earth Observatory, told GlacierHub: “Glaciers and volcanoes can be a particularly hazardous combination.
“The snow and ice provide a ready source of water for the potential generation of destructive lahars during eruptions.”
Lahars are happen when glacier ice suddenly melts melt during an eruption, before loosing dry mud.
The mixture of water and volcanic debris – pyroclastic material – creates a natural concrete-like liquid.
More importantly, the region’s population has ballooned since the last disaster, meaning now 500,000 people live within the 18.6-mile radius that was affected last time.
Volcano expert Anna LoPresti wrote: “With the disaster still fresh in the minds of the Colombian government and scientific community, the current activity at the Nevado del Ruiz is being more closely monitored.”