Key takeaways
- Picón, dark volcanic rock, spreads across La Geria's fields to trap moisture from ocean air, allowing vines to thrive with almost no rainfall.
- Zocos, curved stone barriers, shelter grapevines from trade winds and channel dew toward plant roots in the ash-covered landscape.
- Malvasía vines flourish in volcanic soil, producing the island's distinctive white wine prized since before the 1730 eruptions.
- On the route to Timanfaya National Park, you pass through La Geria's geometric patchwork of green fields reclaimed from black lava flows.
- Islanders returned to bury their land, transforming ash into farmland and rebuilding agriculture on terrain reshaped by volcanic devastation.
The Eruptions That Emptied an Island
In September 1730, the ground beneath Lanzarote fractured. A chain of volcanic eruptions began in the Timanfaya region and continued for six years, transforming the island's landscape almost beyond recognition. Lava flows buried villages, farmland, and entire valleys under black ash and volcanic rock. Thousands of islanders fled. Those who remained faced famine and despair as the eruptions reshaped 200 square kilometers of terrain. By 1736, when the volcanic activity finally ceased, much of central Lanzarote had become an alien wilderness of cinders and stone.
The catastrophe seemed permanent. The fertile volcanic soil that had sustained agriculture for centuries lay buried under metres of barren picon, a coarse volcanic gravel. Yet within decades, something remarkable happened. Islanders began returning to the destroyed land. They did not abandon their inheritance. Instead, they learned to farm the ash itself.
Why Farmers Returned to Buried Ground
The answer lay in the soil beneath the ash. Volcanic rock, when broken down by sun, rain, and wind, becomes extraordinarily fertile. Lanzarote's islanders understood this truth from generations of living on volcanic terrain. The eruptions had not poisoned the earth; they had simply buried it under a thick blanket of picon and rough stone. Farmers gambled that if they could penetrate that layer and dig down to the enriched soil, they could grow again.
By the late 18th century, communities began the backbreaking work of reclamation. They dug pits, sometimes two metres deep, through the ash layer until they reached the dark, mineral-rich earth below. Each pit became a hidden garden, protected from Lanzarote's arid winds and sparse rainfall. The effort was immense, but the results proved worth it. Within a generation, farms were producing crops once more.
Stone crescents cradle single vines across black volcanic ash
The Invention of the Picon Blanket
Farmers discovered an ingenious solution to one of Lanzarote's oldest problems: water scarcity. The island receives minimal rainfall, yet vines and other crops need moisture. The answer was the picon layer itself. Rather than viewing volcanic gravel as an obstacle, farmers began deliberately spreading and managing it as a farming tool. When picon covers the soil, it acts as a moisture trap, reducing evaporation and helping the earth retain precious water during the dry months.
This technique, born from necessity, became the foundation of Lanzarote's agricultural recovery. Farmers learned to layer picon carefully over their planted fields, creating an insulating blanket that kept soil cool and moist. The practice transformed marginal land into productive territory. Today, the picon-covered fields remain one of the island's most distinctive features, visible across the landscape as you travel through the interior.
The Semicircular Walls That Shelter the Vines
As you drive toward Timanfaya National Park, you will notice semicircular stone walls scattered across the volcanic landscape. These are not decorative. Each curved wall, known locally as a zoco, surrounds an individual vine plant, creating a micro-shelter in the open terrain. The walls are built from loose volcanic stones without mortar, allowing them to flex in wind while still breaking the force of Lanzarote's powerful gusts.
The zocos serve multiple purposes. They protect tender young vines from wind damage, especially crucial on an island where Atlantic winds can be severe. The walls also help trap moisture and warmth around the plant roots. At night, the dark stones release heat, extending the growing season. This simple but ingenious design is visible from the coach window as you pass through the agricultural zones, a testament to centuries of accumulated farming knowledge.
150
La Geria receives just 150mm of rain annually, yet vines thrive under layers of volcanic ash.
Malvasia and Lanzarote's Famous Wines
Lanzarote became known throughout Europe for a single grape variety: Malvasia. This white wine grape thrives in the island's volcanic soil and arid climate, producing wines of distinctive character and pale colour. By the 19th century, Malvasia from Lanzarote was exported to Spain's mainland and beyond, becoming one of the island's most valuable exports. The grape had grown here before the eruptions, but it was the post-1736 recovery that established Malvasia as the island's signature crop.
Today, Malvasia still dominates Lanzarote's wine production, though other varieties including Moscatel also grow in the volcanic terroir. The vines you see through the tour window, sheltered by their stone walls and sitting atop layers of picon, continue a farming tradition that stretches back centuries. The volcanic landscape that once seemed utterly barren became the source of wines celebrated across the Mediterranean.
What Else Grows in the Ash
While grapes became famous, they were never the only crop. As farming recovered, islanders diversified. Figs, almonds, and pomegranates thrive in the volcanic soil, their deep root systems reaching through the picon layer to the fertile earth below. Onions, garlic, and beans also grow in the protected pits. Some farmers kept goats and sheep, which graze on sparse vegetation that grows among the rocks. This agricultural mix was essential for survival; a community dependent entirely on a single crop faced ruin if disease or market collapse struck.
The polyculture approach also made practical sense. Different crops mature at different times, spreading labour demands across the seasons. Legumes fixed nitrogen in the soil, enriching it for subsequent plantings. The diversity visible in small farms throughout the region reflects generations of refinement and adaptation to one of Europe's most challenging agricultural environments.
The View Through the Coach Window
Your 9-hour journey passes directly through this recovered landscape. Between pickup points and Timanfaya National Park, the coach travels through the agricultural heartland of post-eruption Lanzarote. You will see endless fields of dark picon, semicircular stone walls surrounding individual vines, and occasional clusters of farm buildings. In spring and early summer, you may glimpse green shoots emerging from the volcanic soil. In winter, the bare stones dominate, a reminder of the harsh environment and the farmers' unceasing effort.
This route tells the recovery story in visual form. The progression from coastal pickup areas through increasingly barren terrain reflects the eruptions' expanding impact as you move toward Timanfaya National Park itself. The cultivated fields gradually give way to untouched volcanic wilderness. Your guide can point out specific zones where farming is most intensive and explain the techniques visible from your window. This landscape is not just beautiful; it is a monument to human resilience and the power of knowledge passed down through generations.
