Grande Mayumba

Our subsidiary, Grande Mayumba Development Company (GMDC) holds long-term rights to consolidate and sustainably develop an area of 731,000 hectares of forested and savannah land in Nyanga Province, southern Gabon.

Grande Mayumba
grande mayumba

Our impact

  • Encompassing


    of forested & savannah land

  • More than

    USD 200m


  • Generating around


    new jobs

  • Avoiding up to


    tonnes of carbon emissions

  • 234,000ha

    conserved for biodiversity

  • Improving livelihoods for



Our flagship project

Grande Mayumba is based in southern Gabon, spanning a diverse range of forested and savannah ecosystems.



Petit Loango Lodge

Grande Mayumba

Atlantic Ocean

Equatorial guinea

Republic of Congo

50 km

Integrated sustainable development

The establishment of forestry, agriculture and ecotourism businesses, supported by regional infrastructure, is detailed in the Grande Mayumba Sustainable Development Plan, which conforms to Gabon’s Sustainable Development Law.

We have set aside one third of the project area as a conservation arc, covering estuarine, montane and savannah ecosystems to ensure that critical biodiversity is protected.

Over the next few years, more than USD 200 million will be invested in commercial activities and infrastructure at Grande Mayumba, generating around 4,000 new jobs over the next 10 years, and providing much-needed socio-economic benefit. In the process, we will avoid many millions of tonnes of carbon emissions in the project area, preventing unplanned development, deforestation and degradation of the ecosystem while delivering sustained commercial value.

The Grande Mayumba film

Watch this short film about the Grande Mayumba project

By CaravanLab
Grande Mayumba

Land-use plan

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Mayumba Mangali Port Nyanga Ranch
  • Agri savannah
  • Conservation forest
  • Sustainable forestry concession
  • Rubber plantation forestry
  • Restoration forestry
  • Community forests
  • Urban & peri-urban
See: Our geographical focus
Sustainable forestry

200,000 ha

of land consigned to sustainable forestry operations

  • Sustainable forestry concession
  • Rubber plantation forestry
  • Restoration forestry
See: Sustainable Forestry

212,000 ha

of agricultural and conservation savannah land

  • Agri savannah
See: Agriculture

234,000 ha

conservation arc covering rainforest, coastal, estuarine, mountain and savannah ecosystems equivalent to a third of the total project area

  • Conservation forest
See: Ecotourism

14 000 ha

of urban municipal and infrastructure development

  • Urban & peri-urban
See: Infrastructure

Carbon Methodology

Working in close collaboration with world-leading carbon experts, we have developed a respected methodology to recognise the avoided deforestation impacts of systematic land-use planning at scale across equatorial forest landscapes.

The Grande Mayumba Methodology

The Grande Mayumba Methodology For Sustainable Development in Tropical Ecosystems has been developed through the rigorous measurements of carbon stocks and detailed modelling of planned versus unplanned scenarios to maximise climate-smart development.

We have demonstrated that over 50 years, unplanned development combined with associated agricultural expansion, continued forest utilisation, increased exploitation of mineral resources and rapid urbanisation in rural areas, would lead to the rapid destruction of the Grande Mayumba landscape, its tropical forest coverage and unique ecosystems.

The avoided emissions resulting from implementation of Grande Mayumba’s Sustainable Development Plan, versus an unplanned business-as-usual scenario, can be calculated, verified and monetised in the form of carbon credits. Credits are generated for each tonne of carbon dioxide equivalent emissions (tCO2e) saved as a result of Grande Mayumba’s planned interventions, in line with the rigorous measurement, verification and auditing protocols set out in Gabon’s Sustainable Development and Climate Laws.

Community Impact

We are committed to improving the livelihoods of people living in and around Grande Mayumba by providing meaningful employment, business opportunities and social services.

Our Sustainable Development Plan scopes out the development of significant regional infrastructure over the next decade, including roads, water and sanitation, sustainable energy and municipal services, as we roll out our activities. This will provide a major stimulus to the local economy.

Through our research partnership, forestLAB, community perspectives and socio-economic impacts of our development programme in Gabon will be monitored on an ongoing basis.

Who we are