Under the feet of the inhabitants of Icod de los Vinos lies an underground world that few imagine: over 17 kilometers of tunnels carved by lava, making the Cueva del Viento the most extensive lava tube system in the entire European Union. When the magma from Teide flowed towards the sea tens of thousands of years ago, the outer crust solidified while the inside remained liquid, creating these natural corridors with a precision that no engineer could replicate.
Entering the cave means traversing three overlapping levels of geological history, each formed in different epochs of Tenerife's volcanic activity. The walls are neither uniform nor mundane: lava stalactites hang from the ceiling like melted wax, the surfaces display streaks of colors ranging from coal black to iron ochre, and in certain places the floor still retains the petrified waves of the last flow that passed through. It is a stratigraphy that one walks through, not just studies in books.
The geology you can touch with your hands
The Cueva del Viento was formed during the eruptions of the Pico Viejo volcano, adjacent to Teide, in a process that geologists date to about 27,000 years ago. The lava tube develops over three distinct levels, and guided tours allow visitors to descend through these layers as if flipping through the pages of a living volcanology manual. The upper level is the most accessible, while the lower levels reveal increasingly complex structures that are less altered by surface erosion.
What visually strikes even the least experienced visitor are the so-called lava stalactites: formations that are created when molten rock drips from the ceiling and solidifies before falling. Some are as thin as candles, others are stout and bulbous. They do not resemble the limestone stalactites of traditional caves — they have a glassy, almost metallic texture that reflects the light from flashlights in unexpected ways.
Life in Permanent Darkness
One of the least publicized yet scientifically most relevant aspects of the Cueva del Viento is its fauna. The cave is home to numerous species of endemic invertebrates adapted to life in total darkness, including spiders, beetles, and other arthropods that do not exist anywhere else on the planet. These organisms have lost pigmentation and often also their sight over millennia of isolated evolution, instead developing highly specialized sensory organs.
The presence of these species makes the cave an active site of scientific interest: researchers in evolutionary biology and speleobiology continue to study it. For the average visitor, the likelihood of spotting one of these small inhabitants is low — they live in areas not accessible to tours — but knowing that beneath their feet exists a parallel and invisible ecosystem changes the perception of the entire visit.
How to organize the visit
Access to the Cueva del Viento is allowed exclusively with guided tours, which can be booked at the visitor center located in Icod de los Vinos, in the north of Tenerife. Standard tours last about one and a half hours and cover the most accessible section of the system, while there are advanced routes for those with caving experience. The ticket for the basic tour costs around 18-22 euros per adult, with discounts for children and residents of the Canary Islands.
The internal temperature of the cave remains constant at around 11-13 degrees Celsius all year round, regardless of the outside heat. Bringing a warm layer is essential, even in the height of summer when outside temperatures exceed 30 degrees. Non-slip shoes are strongly recommended because some lava surfaces are uneven and wet. Tours depart at fixed times and spots are limited: booking at least a few days in advance during the tourist season is a precaution that avoids disappointment.
Icod de los Vinos: the context of the village
The town that hosts the entrance to the cave deserves a few hours of independent visit. Icod de los Vinos is also known for the Millenary Dragon, a specimen of Dracaena draco considered among the oldest and largest of its species, located just a few minutes' walk from the center. The combination of the two visits — the cave in the morning, when tours start early and the heat is not yet oppressive, and the dragon in the afternoon — allows for a rich day without rushing anything.
Reaching Icod de los Vinos is simple: it is located on the north coast of Tenerife, connected by regular buses from Puerto de la Cruz and Santa Cruz. Those traveling by car can park near the cave visitor center. The road that crosses the town offers glimpses of the vineyards that give the place its name — the local wine, produced from grapes grown in volcanic soils, is a more authentic souvenir than any item from a tourist shop.
