Saint-Augustin. Thirty kilometers south of Tuléar, a Vezo fishing village clings to the foot of white limestone cliffs, where the Onilahy River ends its course and flows into the sea. The Portuguese passed through in 1614, pirates followed, and in 1644, one hundred forty Pilgrim Fathers built a fort there. A year later, only twelve remained. Nature here has always had the final word.

It is from here that the pirogue departs. A small boat that carries us at the foot of these limestone mountains, as magnificent as they are sumptuous, looming above us and reminding us, without a word, how small and ephemeral we are. On the flanks of these mineral majesties nestle hundreds of dry stone tombs, as if ancestors, settled up there since time immemorial, watched each pirogue and each life aboard it pass by.

Then the journey begins. The boat waltzes through the meanders of a waterway that gradually widens. The green and generous vegetation of the banks pales the baobabs and dry foliage of the heights. If you listen carefully, you hear crickets singing up there, mingled with the whistling of small kingfishers and other birds taking advantage of shrimp fishermen to feast royally. The further we advance, the wider the river becomes. Sometimes the current grows strong, and at the next bend, calm returns already.

After about thirty minutes of peace and serenity, without warning, the boatmen announce we have arrived. Before us: a semicircle of turquoise water, and then nothing. Everything seems to stop abruptly, like a sharp cut in the landscape. We expected something more grandiose, almost to see water gushing from an entire mountain to fill such a wide river. What lay before us resembled nothing we had imagined.

Disembarking from the pirogue, we saw where all this water truly came from. It emerged, discreetly, from the foot of two small, completely dry mountains, almost insignificant beside the cliffs we had just passed. Two modest springs, with surprisingly weak flow, gave birth to this immense river that had carried us here. The contrast seized us more than the landscape itself.

Andoharano. In Malagasy: the source. One could not have named this place better. We often expect spectacular things to arise from spectacular causes, as if greatness must necessarily announce itself with great fanfare. These two springs reminded us otherwise. Small things, whose strength we do not even suspect, can give birth to immense and magnificent things. Seneca himself was fascinated by the enigma of the sources of the Nile, that river among the most powerful in the known world, born we knew not quite where, in a modesty that contradicted all its majesty downstream.

There is something profoundly reassuring in this lesson. You do not need a grandiose beginning to achieve something great. Sometimes a discreet trickle of water, patient and faithful to itself, is enough to eventually carry entire pirogues and those aboard them to a semicircle of turquoise that no map could have prepared you to imagine.