Fig. 6From: Assessing lava flow susceptibility at neighbouring volcanoes: Nyamulagira and Nyiragongo volcanoes, Virunga Volcanic ProvinceFrequency of occurrence (grey bars), probability density distribution (grey line) and exceedance probability (dashed line) of lava flow length of Nyamulagira and Nyiragongo volcanoes. The very small lava flows that occurred on the upper flank of Nyiragongo volcano above an elevation of 2700 m were not included in the analysis of the lava flow length and are therefore not included in the figureBack to article page