Image showing Tsaratanana Strict Nature Reserve. There are no roads or even paths through this forest, not yet fully explored and protected by its inaccessibility
kew.org > Blogs > Kew Science blog > Climbing Madagascar’s highest mountain

Climbing Madagascar’s highest mountain

Kew Scientist, Maria Vorontsova, joins a team of botanists from Madagascar and China on a challenging expedition to find rare species of bamboo.
Date: 
9 January 2018
Blog team: 
Author: 
Maria Vorontsova

Mysterious Maromokotro

The highest point of Madagascar is Mount Tsaratanana, the highest point of which is known as Maromokotro, rising to 2876m. There are no roads up the mountain and no proper paths. Our expedition was to find species of bamboo not seen for more than 100 years. The work will lead to a better understanding of their evolution.

It is said to be possible to walk from Mangaindrano village (where we would leave our vehicles), to the peak of Maromokotro in just three days. We planned to complete the return journey in 10 days, completing all our botanical work along the way.


Image showing Tsaratanana Strict Nature Reserve. There are no roads or even paths through this forest, not yet fully explored and protected by its inaccessibility

Tsaratanana Strict Nature Reserve. There are no roads or even paths through this forest, not yet fully explored and protected by its inaccessibility (photo: Maria Vorontsova)


Preparing the team in Mangaindrano village

Our expedition included seven botanists and two guides, Berkman and Samuel. After calculating our needs for 10 days of walking, we hired 14 local staff to carry the food and luggage, each porter carrying up to 30kg. We later found out that our two guides had never been up to the top of the mountain, and neither had any of the 14 porters, except for François Ndriamifaly (head porter).


image showing François Ndriamifaly and Maria Vorontsova

François Ndriamifaly and Maria Vorontsova (photo: Maria Vorontsova)


Darkness in the forest

On setting off, our porters walked ahead at frightening speed, carrying our supplies tied to bamboo sticks, with the scientists lagging behind. The path headed steeply upwards through dense vegetation. We reached the rainforest on the second day, and started to collect specimens. Suddenly we noticed it had quickly become dark and the path was impossible to navigate even with torches. We were forced to camp on a narrow sloping patch of ground by a stream called Ranoantevialambazaha. 


Image showing Naivo, an 18 year old rice farmer from Mangaindrano village, walking barefoot carrying tents packed inside rice bags

Naivo, an 18 year old rice farmer from Mangaindrano village, walking barefoot carrying tents packed inside rice bags (photo: Maria Vorontsova)


Bamboo forest!

The next day at dawn we were excited to see more bamboo plants around 100m above our campsite, and a real bamboo forest. Every direction was nothing but bamboo. It was not long until we found more bamboos in flower, something we were not even daring to hope for.

Bamboo flowers are essential for understanding evolution and building an accurate classification, but typical flowering periods of between 40–100 years mean it is rare to find them flowering in the wild. The fruiting branches of Hickelia perrieri obscured the sky, and every spikelet had a distinguishing character: several black hairs on the lemma, just as in the original description written by Madame Aimée Camus in 1924.

There were several different kinds of bamboo: Oldeania species produce majestic erect canes 10cm wide and made an elegant bamboo grove. Sokinochloa (hedgehog bamboo) was a climbing type of bamboo with wide, sturdy stems and remarkable swellings on the nodes. The understory was full of small thin culms of a narrow-leaved bamboo difficult to distinguish from a grass, with small slender spikelets: Nastus, but we do not yet know if it was just one species or several different ones.


Image showing Bamboo forest with a climbing species of Nastus

Bamboo forest with a climbing species of Nastus (photo: Maria Vorontsova)


Cooking rice in the cloud forest

After our exploration of this area, there was no trace of a path and every step sunk into the rotten mossy ground layer. We crossed a ravine holding on to rotting trunks of dead tree ferns. The porters complained loudly of hunger: people carrying awkward loads up a mountain need large and regular meals! Porters normally carry a personal allocation of rice, but water is deemed too heavy, so the group relies on forest streams to cook rice and eat. But this bamboo forest had no streams.

François has gone ahead alone with a machete to cut the way, and he had not returned as promised, so, the only person with any knowledge of the route was gone. We waited for François until three hours before sunset. Then we used GPS tracking to return to the previous night’s stream.


Image showing rice making at the camp site. Of all countries Madagascar has the highest daily per capita rice consumption

Making rice at the camp site. Of all countries Madagascar has the highest daily per capita rice consumption (photo: Maria Vorontsova)


Turning Back

François was missing all night. He didn’t succeed in cutting a path all the way to the next stream, slept in a tree, and then walked back to join us in the morning. Our slow walking team probably could not make it to the next stream within daylight hours, and walking at night was just too risky. In the end, we decided to stay where we were, spent two more days studying bamboos and then turned back for home. Our GPS devices indicated we were still 12km away from Maromokotro and 780m below the peak.


Local customs protect vulnerable ecosystems

Many places in Madagascar have powerful customs intertwined with religious practice. For example, anyone visiting Maromokotro must bring a white rooster and abandon it in the forest as a sacrifice. We took a substitute almost-white chicken with us, but because we didn’t reach the summit there was no need to abandon it. We ate chicken soup on the way back.  

It is an amazing privilege to be able to see a rainforest untouched by human influence, where even a modern well-equipped expedition like ours couldn’t succeed in reaching its destination. Local customs have a powerful influence in establishing respect for the forest as a special place and help to protect this area of northern Madagascar. 

- Maria - 


Image showing Naivo with the white chicken to be sacrificed at Maromokotro: these are available for sale in Mangaindrano village to anyone attempting to reach the peak

Naivo with the white chicken to be sacrificed at Maromokotro: these are available for sale in Mangaindrano village to anyone attempting to reach the peak (photo: Maria Vorontsova)


Our field team

This expedition would not have been possible without the following team of botanists, guides and porters:

Rivontsoa Andrimalala Rakotonasolo (PhD student, Kunming Institute of Botany and Royal Botanic Gardens, Kew), Maria Vorontsova (botanist, Royal Botanic Gardens, Kew), Vololotahina Razafindrahaja (senior botanist, Parc Tsimbazaza), Fabien Rahaingoson (botanist, Kew Madagascar Conservation Centre), Professor Tingshuang Yi (researcher, Kunming Institute of Botany), Zhang Ting (Seed Collecting Coordinator, Kunming Institute of Botany), Jingxia Liu (PhD student, Kunming Institute of Botany), Berkman and Samuel (guides), François Ndriamifaly (head porter), Jaosante Philippe, Jean Clebert, Naivo Arinosy, Ndremamody Cresente, Natapole Gusairé, Rambeloson Honorat, Be Stebi Ogusten, Jaomezara Lorme, Sofa, Belela, Bemozaka Farle, Ossel, Michael Maxbirae (porters), Jouelle (cook).

Also thank you to:

Chinese Academy of Sciences and Professor Dezhu Li for supporting Andrimalala Rakotonasolo’s PhD fellowship; Muséum National d'Histoire Naturelle and Thomas Haevermans for supporting work towards the Flora of Madagascar; Stuart Cable (RBG Kew) and the Kew Madagascar Conservation Centre (KMCC) for research collaboration; Madagascar National Parks, Direction Générale des Forêts, and Parc Botanique et Zoologique de Tsimbazaza for supporting the permit applications and granting our permits.


Image showing Tsaratanana bamboo team: 13 porters, 7 botanists, 2 guides, 1 Head Porter, and 1 cook

Tsaratanana bamboo team: 13 porters, seven botanists, two guides, one Head Porter, and one cook (photo: Maria Vorontsova)


Find out more

Dransfield, S. (2016). Sokinochloa, a new bamboo genus (Poaceae-Bambusoideae) from Madagascar. Kew Bulletin 71: 40. Available online

Vorontsova, M.S., Clark, L.G., Dransfield, J., Govaerts, R. & Baker, W.J. (2016). World Checklist of Bamboos and Rattans. International Network of Bamboo and Rattan & Royal Botanic Gardens, Kew. 454 pp.Available online

Zhang, Y.X., Ma, P.F., Havermans, T., Vorontsova, M.S., Zhang, T., Nanjarisoa, O.P. & Li, D.Z. (2017). In search of the phylogenetic affinity of the temperate woody bamboos from Madagascar, with description of a new species (Bambusoideae, Poaceae). Journal of Systematics and Evolution 55(5): 453–465. Available online

Follow Kew Madagascar Conservation Centre on twitter

Read the Kew Madagascar Conservation Centre blog


Blog: Madagascar’s wildlife – a President’s vision

The President of Madagascar visited Kew and discusses critical wildlife conservation in the country with our scientists and members of KMCC. Kew has strong links to Madagascar, employing a team of Malagasy botanists working on projects on plant diversity, research and conservation.

Blog: Putting bamboo and rattan on the map

Kew launches a World Checklist and Atlas for Rattans and Bamboos. In this post, we explain Kew's involvement in these much needed books.

Project: Grasses and savannas of Madagascar

Using knowledge of endemic grasses to understand the history of open canopy areas.