The Goma Volcano Observatory (GVO) in the Democratic Republic of Congo said there has been intense lava lake activity in the central crater since November 4.
The scientific institute responsible for monitoring the Nyiragongo and Nyamuragira volcanoes observed that the situation is not critical, according to Africanews, which provides the information.
According to a statement, the activity would be concentrated in the crater, at a depth of around twenty meters.
Nyamuragira is a volcano located in the far west of the Virunga volcanic province in North Kivu.
Its last major eruption occurred in 2011, the largest in 100 years.
In light of these observations, the GVO stated that the alert level remains yellow and, to this end, the population is asked to remain calm and vigilant.
There are currently no threats to the city of Goma, where around 670,000 people live, according to UN estimates.