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40     Africa



               Nyiragongo                                  lava  flows  from  the  1.2km-wide  crater.  Similar
               Nyiragongo (1°31´S, 29°15´E; 3470m) is one of   destruction  also  occurred  during  the  1997
               Africa’s  most  remarkable  volcanoes.  This  strat-  eruption, draining fluid lavas from the crater to the
               ovolcano in the Albertine Rift Valley, 20km north   city in less than one hour (Allard et al, 2003).
               of Goma, DRC, has been erupting every three to   Notwithstanding  this  damage  Nyiragongo  is
               five years since the early 20th century. However,   seen  as  an  exceptional  resource  for  the  people
               for a long period of time during the 19th century   living in this area. For the local population its lavas
               it was thought that this volcano was dead. In fact,   bring forth rich soils of outstanding productivity
               when the expedition by Von Goetzen climbed this   that support their living, and for the tourists and
               mountain  in  1894  for  the  first  time  ever,  they   climbers it has always been an exciting experience
               found no sign of recent activity, except for some   climbing the mountain and catching a view of the
               smoke from fumaroles. But this came to an abrupt   huge  boiling  lava  lake  from  the  crater  rim.  But
               end in 1928 when the lava lake in the crater was   sometimes at a great price: in July 2007, a Chinese
               created (Diallo, 1975; Tazieff, 1979; GVP/USGS,   tourist plummeted 120m to her death from the
               2008a).                                     crater rim onto a ledge close to the lake of molten
                  Nyiragongo  erupted  in  1972,  in  1975,  in   lava. She could not be rescued in time due to the
               1977, in 2002 and in 2006. Its eruptions are always   unfavourable  conditions  inside  the  crater  (ABC
               preceded by strong tremors, according to which a   News, 2007; Polgreen, 2008).
               state  of  emergency  is  declared  by  the  Goma
               Geophysical  Observatory.  The  2002  eruption   Nyamulagira
               caused a lot of damage to Goma: more than 4500   Nyamulagira (1°24´S, 29°12´E; 3058m) is located
               houses were burned by, or buried under 2m-thick   about  25km  north  of  Lake  Kivu,  and  13km




































               Figure 2.5  The stratovolcano Nyiragongo in the DRC
               Source: Photo courtesy of Maik Bunschkowski (Wikimedia Commons)







       Ch02.indd   40                                                                              3/28/2010   1:26:36 PM
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