The research base
Continuous research on these animals began when Dian Fossey founded the Karisoke Research Center in the saddle between Karisimbi and Bisoke in September 1967. Four decades of daily monitoring produced an unmatched body of knowledge about the gorillas and their habitat, and — just as importantly — a permanent human presence in the forest that deters poaching. The organisation Fossey founded still runs daily protection and monitoring, now operating from Musanze rather than the mountain. You can walk to the old site and her grave; see the Fossey tomb hike.
Veterinary intervention
Mountain gorillas are among a very small number of endangered species that receive hands-on veterinary care in the wild. A dedicated veterinary programme, running since the mid-1980s across Rwanda, Uganda and DR Congo, monitors the health of habituated groups and intervenes in cases of snare injury, respiratory infection and trauma. Because gorillas share so much of our physiology, they also catch our diseases — which is the reason for the distance rules, the mask requirement and the exclusion of anyone with a cold from a trek.
The programme also runs an employee health scheme for the trackers and guides, on the logic that protecting the humans in daily contact with the animals is itself gorilla conservation.
What the permit pays for
Rwanda's high permit price is a deliberate policy: a small number of visitors paying a lot, rather than a lot of visitors paying a little. The revenue funds park operations, ranger salaries and anti-poaching, and a defined share is returned to the communities living around the park boundary — schools, water, health posts and housing. That last part is what makes the model hold. The threat to gorillas today is not demand for the animals; it is demand for the forest they live in, from people around it who need firewood, water and land. Conservation that does not pay the neighbours does not last.
The community tourism operations around the park — the cultural village at Kinigi among them — grew directly out of this logic, several of them founded to give former poachers an income from the animals alive.
Beyond gorillas
The same argument runs through the rest of the estate. Akagera's recovery under active management — the fence, the reintroductions of lion and rhino, the collapse in poaching — is the clearest recent example in the country, and Humure on its southern boundary is where you can hear the other side of it.