T
HEY GRABBED blankets, clothes and mattresses and rushed out of their houses at dawn on May 27th. In their tens of thousands, they streamed out of the city of Goma, in eastern Congo, terrified of what its volcano might do next. Some fled east towards the border with Rwanda (see map). Others hurried west to the Congolese town of Sake, around 20km away, clogging the dirt road from Goma with motorbikes, cars and pedestrians. Hundreds of people rushed down to Goma’s port to pile onto boats heading to Bukavu, a city at the southern end of Lake Kivu.