Well before dawn, some passengers go up on deck to watch for a reddish glow above the island: Yasur is awake. Tanna, in the south of the Vanuatu archipelago, owes its fame to this permanently active volcano, considered the most accessible in the world. The call at Lenakel, on the west coast, opens the door to an island that has remained deeply faithful to its customs.

Arriving by sea

Ships anchor off Lenakel, the main town, and tenders land passengers at the small jetty. The Pacific swell sometimes has the final say: schedules may shift, and days are planned with flexibility. Ashore, guides and drivers wait near the market, where women sell taro, bananas, flower garlands and woven baskets laid out on mats. The town itself amounts to a few streets, a bank and some stalls: the heart of the day plays out elsewhere, on the tracks of the interior.

Crossing to the volcano

Reaching Yasur means crossing the island by four-wheel drive, on tracks that climb through the forest before emerging onto a windswept plain of grey ash. The contrast is striking: in a few minutes, lush vegetation gives way to a bare, almost lunar landscape where the cone's flanks smoke. Vehicles park below the ridge, and a short walk leads to the crater rim.

At the crater's edge

The ground trembles gently, then a muffled boom rises from the depths: Yasur hurls its sprays of lava at regular intervals, before the eyes of visitors gathered on the ridge. Access remains supervised by guides and depends on the current level of activity. Many cruise lines schedule the excursion for late in the day, when the dusk reveals the orange glow of the ejecta. The return trip, headlights sweeping across the plantations in the dark, extends the adventure all the way back to the dock. Rarely can such an intense natural spectacle be reached in a single port call.

Villages and kastom

Tanna lives by kastom, the ancestral code that governs village life. Several communities welcome travellers to share dances, kava preparation and everyday skills. These encounters, organized with local chiefs, take place in mutual respect: you come as a guest, not as a spectator. The children often provide half the show on their own.

The coast and its surprises

Near Lenakel, the coast hides a sea cave where light falls through an opening in the roof and turns the water a luminous blue, reachable by swimming with a guide, depending on the sea. Elsewhere, natural pools and waterfalls dot the forest. A simple walk through the coffee plantations and food gardens, among black pigs and hibiscus hedges, already gives a sense of island life. Fruit literally falls from the trees, and the guides are happy to demonstrate, machete in hand.

Planning your day

• The Yasur excursion takes up most of the call: book it first.
• Wear closed-toe shoes and a windbreaker; the ash gets in everywhere.
• Visitors with reduced mobility can watch the eruptions from the parking lot below the ridge.
• The local vatu and small bills make market purchases easier.

On the way back, most passengers fall silent for a long while on deck, gazing at the column of smoke as it fades. Tanna isn't easily put into words: the island is felt, in the rumble of the volcano as in the handshake of a village chief. Those who have experienced it once understand why some travellers come back, simply to hear the earth breathe again.