Rwanda Gorilla Trekking Rules — Why They Exist and What They Mean in Practice
Rwanda gorilla trekking rules are not arbitrary restrictions. They are the product of decades of research into mountain gorilla health, behaviour, and the long-term consequences of human contact on habituated great ape populations. Understanding why each rule exists makes compliance easier and the experience more meaningful. This guide covers every Rwanda Development Board (RDB) rule for gorilla trekking at Volcanoes National Park, with the reasoning behind each one.
The Seven-Metre Distance Rule
The most fundamental Rwanda gorilla trekking rule is the requirement to maintain a minimum distance of seven metres between visitors and gorillas at all times. Seven metres is not an arbitrary number — it corresponds to the estimated maximum distance over which a human respiratory pathogen can travel in the aerosol droplets produced by normal breathing and speaking.
Mountain gorillas share approximately 98% of human DNA and are susceptible to every respiratory disease that affects humans: common colds, influenza, respiratory syncytial virus, and more recently, COVID-19. A habituated gorilla family has no immune defence against human pathogens — habituation to human presence did not confer immunity. A respiratory illness that would keep a human in bed for a week can be fatal in a gorilla population.
In practice, the seven-metre rule is enforced by your guide but is not always achievable — gorillas approach visitors regularly, and when they do, the correct response is to stay still, avert your eyes, and let the animal move past or settle. The rule is about visitor behaviour, not about physically blocking gorilla movement.
No Trekking If Sick
Any visitor showing symptoms of a cold, flu, stomach illness, or any respiratory condition will be turned away at the park gate. The rule applies equally to every permit holder, regardless of how far they have travelled or what the permit cost. The permit fee is not refunded for illness-based exclusion.
This rule is the most difficult for visitors to accept — and the most non-negotiable. The risk of transmitting a respiratory illness to an unvaccinated gorilla population is real enough that RDB enforces it without exception. If you wake on trek day with a sore throat, a runny nose, or a cough, you do not trek. The appropriate response is to have travel insurance that covers gorilla permits.
No Flash Photography
Flash photography is prohibited in the presence of mountain gorillas. The prohibition exists because the sudden burst of light from a camera flash is startling to gorillas — it disrupts the calm of the encounter, can provoke agitation in silverbacks, and at close range can cause temporary discomfort or distress in the animals. It also simply does not produce good photographs in a forest setting.
Modern cameras handle the low-light conditions of Volcanoes National Park’s forest environment well at higher ISO settings. The prohibition on flash is not a significant photographic constraint — it is a prompt to use available light properly.
No Eating or Drinking in the Presence of Gorillas
Eating or drinking during the one-hour gorilla encounter is not permitted. Food and drink items must remain in your day bag while you are with the gorilla family. The reasons are primarily disease transmission (saliva from shared food items, food odours that provoke curiosity and approach behaviour) and behavioural (food smells can attract gorillas into closer proximity than is appropriate).
Water and snacks can be consumed before and after the encounter, during the walk to and from the family.
Noise Control
Loud noise, sudden movement, and talking above a low murmur are all prohibited during the gorilla encounter. Gorillas in habituated groups are accustomed to a steady human presence but react to sudden or unexpected stimuli — a shout, a dropped item, a sudden movement toward the animals. Your guide will conduct the hour largely in silence, with quiet directional guidance when positioning changes are needed.
No Drone Operation
Drone operation within or in the vicinity of Volcanoes National Park is prohibited. The noise of drone motors disturbs gorilla families and provokes stress responses — silverbacks in particular respond to overhead movement with alarm displays. The prohibition applies regardless of permit type; even the Exclusive Experience and Behind the Scene Package do not carry drone access.
Group Size Cap — Eight People Maximum
A maximum of eight people are permitted in the presence of any single gorilla family at any time. This includes your guides and rangers — the eight-person count applies to visitors only. The cap exists to limit the cumulative respiratory risk and the stress of human crowd presence on the animals.
For private groups larger than eight, RDB will assign the group to two separate gorilla families — a workable arrangement that still produces a private experience for each sub-group, though not the experience of the whole party being together with one family. For groups of eight or fewer, the Exclusive Mountain Gorilla Experience provides the cleanest solution.
Minimum Age — 15 Years
No visitor under the age of 15 may trek to habituated mountain gorillas at Volcanoes National Park. The age limit exists for two reasons: children are more likely to make sudden noise or movement that disturbs gorilla families; and children are statistically more susceptible to and more likely to be carriers of respiratory illness. The age restriction is enforced at the park gate through passport or identity document verification.
Behaviour in the Presence of a Charging Gorilla
Silverback display behaviour — chest-beating, vocalisation, charging — occasionally occurs during encounters, typically in response to a perceived threat (a visitor who has unknowingly made eye contact, a sudden movement, or simply the silverback’s assertion of authority). The correct response is the one your guide will give you the morning of the trek: crouch down, avert your eyes, do not make direct eye contact, and do not run. Running triggers the predator-prey response. Stillness and submission — which is what crouching and averting eyes signals in primate communication — de-escalates almost all charging displays. Guides manage these situations regularly; follow their direction immediately and without hesitation.
No Littering
No waste of any kind — wrappers, water bottles, tissues, food — is to be left in Volcanoes National Park. All items carried in must be carried out. Gorillas are curious animals who will investigate and attempt to consume anything unfamiliar; ingested plastic or contaminated human food items can be fatal.
A Final Note on the Rules
Mountain gorilla conservation works because the rules work. The recovery of the mountain gorilla population from under 600 individuals in the early 1990s to more than 1,100 today is in significant part a function of the rigorous management of human-gorilla contact — including these rules and the enforcement culture behind them. Following them is not a bureaucratic inconvenience. It is the condition on which the experience itself depends.
