Brian Crawford's The evil wind

"After a weeklong trip to Rwanda, an American youth group embarks on the experience of a lifetime: a trek up the Nyiragongo volcano in the neighboring Democratic Republic of Congo. Now the volcano has been calm for years, and tourists once again brave its slopes. But as night falls and the trekkers take shelter at the crater's rim, a low rumble announces that the volcano might not be so calm, after all. The Evil Wind is from Survive, an EPIC Press series"--Provided by the publisher.