Sacred Forests: How Taboo Protected Trees for Centuries

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By Jordan Lamont · Last updated 7 October 2026

Say it like a local: ala (AH-la) — forest; ala fady — a sacred, forbidden forest.

Some of the last untouched forest in Madagascar survives for a reason that has nothing to do with national parks or rangers. It survives because cutting it is forbidden — not by the state, but by the ancestors. Scattered across the island are patches of old forest that no one will clear, because to do so would offend the dead who lie within them. These are the ala fady, the sacred forests, and they are one of the oldest conservation systems on Earth.

Protected by taboo, not by law

A sacred forest is defined by fady — the web of ancestral taboos that governs Malagasy life. Where a forest is fady, custom forbids felling trees, clearing land for crops, or hunting within it. The prohibition carries the weight of the ancestors, which in much of Madagascar is heavier than any government decree. The result is islands of green: dense, old-growth stands surviving in landscapes otherwise stripped for rice and charcoal.

Forests of the dead

Most sacred forests are sacred because they are cemeteries. They hold the tombs of ancestors and, in some regions, of royalty — and the living protect the trees to protect the resting places beneath them. The sacred hill of Antsahadinta, southwest of Antananarivo, is a classic example: its forest has been spared from slash-and-burn for generations because royal tombs lie within it. In the arid south, the Mahafaly and Tandroy keep sacred forests that are at once graveyards, pharmacies of medicinal plants, and refuges for wildlife.

An accidental ark

Because they ban hunting as well as cutting, sacred forests have become unplanned wildlife refuges. Researchers credit fady with protecting threatened species including Verreaux’s sifaka, the golden-crowned sifaka and the radiated tortoise — animals that survive in a sacred grove precisely because no one will touch it. Some of these forests are the last home of species found nowhere else, kept alive by belief rather than by biology budgets. The same island that has lost so much forest has, in its taboos, quietly banked some of its rarest life.

A fragile kind of protection

The catch is that this ark floats on tradition, and tradition is thinning. As old social and economic systems break down — through migration, poverty, new arrivals who do not share the local fady, and pressure for farmland and charcoal — some sacred forests are being cleared for the first time in living memory. A protection that depends on everyone believing the same thing is only as strong as that shared belief. Conservationists increasingly argue that handing stewardship back to the communities who created these fady is the surest way to keep the forests standing.

Why it matters today

Sacred forests reframe conservation in Madagascar as something cultural, not just ecological — and they place a real responsibility on visitors. If a guide leads you into an ala fady, you are entering a cemetery and a sanctuary at once: follow every rule, take nothing, and tread lightly. Understand the fady before you go, see where the island’s wildlife clings on, and plan thoughtfully with our Madagascar travel guide.

FAQ

What is a sacred forest in Madagascar?

A patch of forest protected by fady (taboo) — often because it holds ancestral tombs — where cutting, clearing or hunting is forbidden by custom rather than law.

How do sacred forests help conservation?

By forbidding clearing and hunting, fady has preserved patches of forest and species such as Verreaux’s sifaka, golden-crowned sifaka and the radiated tortoise for generations.

Can tourists enter sacred forests?

Only with a local guide and permission, and by following every fady — rules may govern dress, speech, what you carry, and where you may step.

Are they still protected?

Many are, but the tradition is weakening as old social systems break down, making some sacred forests newly vulnerable.