The crater contained an active  lava lake between 1894 and 1977. The eruption that occurred on 10th January 1977, lasted for less than an hour, say within 30 minutes, and the lava flowed down the flanks of the volcano at an average speed of 6okm/h on the upper slopes. The lava flow submerged the near villages ,killing at least 70 people.

This was the fastest lava flow recorded, that within these 30 minutes, the lave lake was emptied hence flowing to the directions of the North, South, and Western slopes of the Nyiragongo  Volcano

The 1977 eruption raised awareness of the unique dangers posed by Nyiragongo Volcano, and because of this it was designated a Decade Volcano, worthy of particular study, in 1991.

The 1977 eruption was preceded by the creation of a new small volcano, Murara, a short distance away on the slopes of Nyamuragira.

The reformation of the lava lakes in the crater later resulted due to the eruptions in 1982 to 1983, and 1994. Yet another major eruption of the volcano began  on the 17th January 2002, after many months of increased seismic and fumarolic activity. The 13 km fissure opened in the southern flank of the volcano, spreading in a few hours from 2800 m to 1550 m elevation and reaching the neigboring regions of Goma city, Lava streamed from three spatter cones at the end of the fissure and flowed in a stream 200 to 1000 m wide and up to 2 m deep through Goma. Lava covered the northern end of the runway at Goma International Airport, leaving the southern two-thirds usable, and reached Lake Kivu.

This eruption led to the loss of about 245 people who died as a result of  asphyxiation by carbon dioxide and the buildings collapsed due to the lava and earthquakes. At least 15% of Goma comprising 4,500 buildings were destroyed, leaving about 120,000 people without homes.

Immediately after the eruption stopped, a large number of earthquakes were felt around Goma and Gisenyi. This swarm activity continued for about three months and caused the collapse of more buildings.

Six months after the start of the 2002 eruption, Nyiragongo volcano erupted again. Activity at Nyiragongo is ongoing, but currently confined to the crater, where another lava lake has formed about 250 metres below the level of the 1994 lava lake.

The Mount Nyiragongo lava lake activity continued through 2010.As of June 2010, the lake is mostly confined within a broad, steep-sided cinder cone (roughly 18 m (60 ft) high by 180 m (600 ft) wide) on the crater floor

The crater contained an active  lava lake between 1894 and 1977. The eruption that occurred on 10th January 1977, lasted for less than an hour, say within 30 minutes, and the lava flowed down the flanks of the volcano at an verage speed of 6okm/h on the upper slopes. The lava flow submerged the near villages ,killing at least 70 people.

This was the fastest lava flow recorded, that within these 30 minutes, the lave lake was emptied hence flowing to the directions of the North, South, and Western slopes of the Nyiragongo  Volcano

The 1977 eruption raised awareness of the unique dangers posed by Nyiragongo Volcano, and because of this it was designated a Decade Volcano, worthy of particular study, in 1991.

The 1977 eruption was preceded by the creation of a new small volcano, Murara, a short distance away on the slopes of Nyamuragira.

The reformation of the lava lakes in the crater later resulted due to the eruptions in 1982 to 1983, and 1994. Yet another major eruption of the volcano began  on the 17th January 2002, after many months of increased seismic and fumarolic activity. The 13 km fissure opened in the southern flank of the volcano, spreading in a few hours from 2800 m to 1550 m elevation and reaching the neigboring regions of Goma city, Lava streamed from three spatter cones at the end of the fissure and flowed in a stream 200 to 1000 m wide and up to 2 m deep through Goma. Lava covered the northern end of the runway at Goma International Airport, leaving the southern two-thirds usable, and reached Lake Kivu.

This eruption led to the loss of about 245 people who died as a result of  asphyxiation by carbon dioxide and the buildings collapsed due to the lava and earthquakes. At least 15% of Goma comprising 4,500 buildings were destroyed, leaving about 120,000 people without homes.

Immediately after the eruption stopped, a large number of earthquakes were felt around Goma and Gisenyi. This swarm activity continued for about three months and caused the collapse of more buildings.

Nyiragongo Volcano Facts & Information.

Geology of Nyiragongo Volcano.

Nyiragongo volcano partly overlaps with two oldest volcanoes in the world of Baratu and Shaheru with clear record of being surrounded by hundreds of small Volcanic Cones developed from Eruptions.

The lava emitted in eruptions at Mount Nyiragongo is often unusually fluid as it was evidenced in the 1977 eruption that destroyed the biggest part of Goma Town,The Mountain’s lavas are made of melilite nephelinite, an alkali-rich type of volcanic rock whose unusual chemical composition may be a factor in the unusual fluidity of the lavas there. Nyiragongo’s lava flows may race downhill at up to 100 km/h (60 mph). This is because of the extremely low silica content (the lava is mafic).

Nyiragongo Volcanic Eruptions Historical Facts.

Mount Nyiragongo has been erupting since 1977 and there have been over 34 eruptions some being internal eruption which is not visible but the notable eruptions was in 1977, 2002 .
The lava lake is some 250 m below the level of the 1994 lava lake. One of the ongoing problems is localized CO2 toxic gas releases. The deadly releases are locally referred to as “mazuku.” The gas seeps from fumaroles and cracks in the flanks of the volcano. A new vent opened on the flank in March 2016. It was accompanied with reports of rumbling leading to fears of an impending flank eruption.

The most recent large eruption was in 2002. It killed 147 people. Lava flows traveled through the neighboring city of Goma, destroying 13% of it. The eruption displaced 12 – 15,000 homes and hundreds of thousands of people. The lava flows entered the lake, and posed a threat to release CO2 and methane gas stored in the lake. Lava from the 2002 eruption is thought to be residual lava from the lava lake activity in the mid-1990s. It was followed by a fresh batch erupted from fissure vents. The eruption was followed by unusual tectonic activity with over 100 earthquakes greater than 3.5 Richter during the 5 days following the eruption. There was also land subsidence at Goma and up to 10

Geology of Nyiragongo Volcano.

Nyiragongo volcano partly overlaps with two oldest volcanoes in the world of Baratu and Shaheru with clear record of being surrounded by hundreds of small Volcanic Cones developed from Eruptions.

The lava emitted in eruptions at Mount Nyiragongo is often unusually fluid as it was evidenced in the 1977 eruption that destroyed the biggest part of Goma Town,The Mountain’s lavas are made of melilite nephelinite, an alkali-rich type of volcanic rock whose unusual chemical composition may be a factor in the unusual fluidity of the lavas there. Nyiragongo’s lava flows may race downhill at up to 100 km/h (60 mph). This is because of the extremely low silica content (the lava is mafic).

Nyiragongo Volcanic Eruptions Historical Facts.

Mount Nyiragongo has been erupting since 1977 and there have been over 34 eruptions some being internal eruption which is not visible but the notable eruptions was in 1977, 2002 .
The lava lake is some 250 m below the level of the 1994 lava lake. One of the ongoing problems is localized CO2 toxic gas releases. The deadly releases are locally referred to as “mazuku.” The gas seeps from fumaroles and cracks in the flanks of the volcano. A new vent opened on the flank in March 2016. It was accompanied with reports of rumbling leading to fears of an impending flank eruption.

The most recent large eruption was in 2002. It killed 147 people. Lava flows traveled through the neighboring city of Goma, destroying 13% of it. The eruption displaced 12 – 15,000 homes and hundreds of thousands of people. The lava flows entered the lake, and posed a threat to release CO2 and methane gas stored in the lake. Lava from the 2002 eruption is thought to be residual lava from the lava lake activity in the mid-1990s. It was followed by a fresh batch erupted from fissure vents. The eruption was followed by unusual tectonic activity with over 100 earthquakes greater than 3.5 Richter during the 5 days following the eruption. There was also land subsidence at Goma and up to 10 km south along the northern lake shore.