Park director Emmanuel de Merode calls the status of gorillas in Virunga "a triumph for conservation."
Only about 700 mountain gorillas are left in the world, an estimated 190 of them in Congo around the Mikeno volcano.
In the months before insurgents first seized the area in 2007, 10 mountain gorillas were killed by unidentified attackers.
A deal between the insurgents and President Joseph Kabila's administration late last year paved the way for staff who fled fighting and the rebel occupation to return.
RSS feeds | Slideshow archive | ABC13 wireless | Help solve crimes
