Plizio Visual Lab
Mount Karthala
Plizio editorial teamData Sources
Mountain
Weather…
Water temperature…
Mount Karthala is a massive active shield volcano on Grande Comore island and the highest point in the archipelago, standing at 2,361 meters. It features one of the largest active calderas in the world, measuring approximately three by four kilometers in diameter. The volcano's geological history is characterized by frequent eruptions, with the most recent significant events occurring in 2005 and 2006, which reshaped the crater landscape. Treks to the summit lead through diverse terrain, from dense cloud forests to barren ash fields at the crater's edge. Inside the caldera, several smaller craters and solidified lava lakes bear witness to the immense power of the Earth's interior. The volcano plays a central role in the island's ecosystem, as its slopes act as a water reservoir and provide unique microclimates for endemic flora and fauna. Continuous monitoring by the local volcano observatory is vital for the safety of Moroni, located at the mountain's base. Despite the persistent volcanic threat, Karthala remains a symbol of the dynamic nature of the Comoros.
- Location: Comoros
- Top sights: Foyer ACET · Karthala Northern Crater Viewpoint · Karthala Crater Viewpoint
- Nearby: Hambou (4 km)
Best time to visit & climate
The most pleasant time to visit is Jul–Sep.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °C | 28 | 28 | 28 | 28 | 27 | 26 | 25 | 25 | 25 | 26 | 27 | 28 |
| Rain mm | 214 | 155 | 148 | 127 | 62 | 39 | 33 | 21 | 20 | 37 | 46 | 101 |
📋 Practical info
Getting there
Most hikers begin their journey from the capital city, Moroni, travelling to nearby villages where the main trailheads are located and where local guides can typically be hired.
Best season
The dry season, usually lasting from May to November, gives the best hiking conditions with cooler temperatures and significantly less risk of heavy, trail-washing tropical rains.
Terrain & paths
The trail ascends through dense, humid rainforests before emerging into a completely barren, surreal landscape of volcanic ash and extensive lava fields near the massive crater.
What to bring
Plenty of drinking water is critical as there are no sources on the mountain. Sturdy boots, sun protection, and a light jacket for the cooler rim temperatures are highly recommended.
Parking
Vehicles are generally parked in the gateway villages at the foot of the volcano, often near a guide’s residence or local community center where they can remain safely during the trek.
Safety
As this is an active volcano, hikers must check recent geological activity before departing; travelling with an experienced local guide is strongly advised to navigate the sometimes unclear paths.
Time needed
The ascent and descent can be completed as a very long and exhausting day hike of roughly 10-12 hours, though some choose to camp overnight near the crater to experience the sunrise.
Geography
Facts
- At 2,361 meters, Mount Karthala is the highest peak in the Comoros.
- The caldera measures approximately 3 by 4 kilometers in size.
- More than 20 eruptions have been recorded since the 19th century.
- The 2005 eruption created a new lava lake within the caldera.
- It is a shield volcano, structurally similar to those in Hawaii.
- Moroni, the capital of the Comoros, lies at the foot of the mountain.
Explore nearby
Notable places around
Route planner — Car & Motorhome
Where do you start? We build the route here, with stops and country notes along the way.
Vehicle
Only stops with (optional):
© OpenStreetMap contributors · OpenRouteService
Sights in the town Mount Karthala (3)
Sights nearby
Frequently asked questions
Is Mount Karthala still active?
Yes, it is one of the most active volcanoes in the world; the last eruption was in 2005.
How long does the hike to the crater take?
The demanding hike takes about 7 to 9 hours round trip.
Is a guide mandatory?
A guide is highly recommended for safety reasons and navigation through the lava rocks.
Can you stay overnight on the mountain?
There are simple camping options near the summit for two-day tours.
What is the weather like at the summit?
It can be significantly cooler and windier than at the coast; warm clothing is necessary.
Mount Karthala: where is it located?
Mount Karthala is located in Comoros.
Mount Karthala: what is there to see?
Highlights include Foyer ACET, Karthala Northern Crater Viewpoint, Karthala Crater Viewpoint.
Mount Karthala: when is the best time to visit?
The most pleasant time to visit is Jul, Sep.
Mount Karthala: why is it worth visiting?
Mount Karthala is a massive active shield volcano on Grande Comore island and the highest point in the archipelago, standing at 2,361 meters.
Explore with Plizio
Discover more places in Africa
More places in Comoros →
Nearby cities
Moroni
Moroni is the capital of the Comoros, situated at the foot of Mount Karthala on the island of Grande Comore.
Iconi
Iconi is one of the oldest cities in the Comoros, located south of Moroni.
Mbéni
Mbéni is a significant city in the northeast of Grande Comore.
Mitsamiouli
Mitsamiouli is a coastal town in the north of Grande Comore, known for its beautiful beaches.
Vouvouni
Vouvouni stands at the foot of Mount Karthala near Moroni.
Mvouni
Mvouni lies on the slopes near Moroni on Grande Comore.
Tsidjé
Tsidje is a suburb on the edge of Moroni.
Ntsoudjini
Ntsoudjini is an inland town on Grande Comore, known for its scholars.
Foumbouni
Foumbouni is the most important city in the south of Grande Comore island.
Djoumoichongo
Djoumoichongo is a rural settlement in the southwest of Grande Comore.
🗺️
Bandamadji
Bandamadji is a settlement in the northern part of Grande Comore.
Itsandra
Itsandra is a historic coastal town located just north of Moroni.
Dembéni
Dembéni is a town in the southeast of Grande Comore.
Singani
Singani is a west coast village on Grande Comore.
Koimbani
Koimbani is the administrative center of the Oichili region on Grande Comore.
History & landmarks
Malouzini Stadium
The Malouzini Stadium is the largest and most modern football stadium in the Comoros, located south of Moroni.
Lycée Saïd Mohamed Cheikh
This secondary school in Moroni is the country's most prestigious educational institution and has produced many leaders.
Alliance Française de Moroni
The Alliance Française in Moroni is a cultural venue for events, classes, and public programs.
Volovolo Central Market
Volovolo Market is Moroni's busiest market and a key place for daily shopping.
Central Bank of the Comoros
The Central Bank building in Moroni is a symbol of the country's financial independence and economic stability.
Palais de Justice (Moroni)
The Palais de Justice in Moroni is the seat of the supreme court of the Comoros and a significant government building.
Nature
More places
Nature Trail in Karthala Forest
This family-friendly trail runs along the lower slopes of Mount Karthala.
Ylang-Ylang Plantations of Bambao
The Bambao region on Grande Comore is known for its extensive Ylang-Ylang fields, whose flowers are harvested for perfume production.
Botanical Garden of Mvouni
The botanical garden in Mvouni showcases a collection of native and exotic plants and is a popular destination for school trips.
🗺️
Old Mosque of Ntsoudjini
The old mosque of Ntsoudjini is a symbol of the long tradition of scholarship in this town on Grande Comore.
Bambao Essence Distillery
In this major industrial facility, precious ylang-ylang oil is extracted through steam distillation for the world market.
Spice Garden of Moroni
Near the capital, visitors can see the variety of Comorian spices like pepper, cinnamon, and nutmeg in their natural environment.
Coelacanth Marine Area
The Coelacanth Marine Area off Grande Comore is linked to the famous living fossil.
Indian Ocean Printing Works
One of the largest printing works in the country, producing newspapers, state documents, and educational materials.