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If you are a lover of the planet’s geological wonders, you can’t miss visiting Las Grietas Lanzarote. These volcanic formations have become popular for the magnificent photographs captured by tourists. They are located at the foot of Montaña Blanca volcano. What makes them so special? Keep reading to find out.
What are Las Grietas, and where are they located?
They are geological formations created by the cooling and subsequent fracturing of lava from eruptions and by the action of water. They consist of three narrow passages with lava walls you can explore and admire for their peculiar beauty. While there are many more, these are the smaller cracks.
You can find Las Grietas in the southern part of Lanzarote, near the municipality of Yaiza.
Formation and geological features of Las Grietas
Imagine walking through a lava tunnel; this is essentially what Las Grietas represent. Have you ever wondered how they form? This phenomenon occurs when the surface of a lava flow cools and hardens, while the liquid inside continues to flow.
Over time, this lava river emptied, leaving a natural passageway on the slopes of Montaña Blanca volcano.
As you venture into the passages, your hands can touch their warm-toned walls, which range from brown to reddish hues. You’ll also witness the effects of time, such as erosion and sedimentation, leaving horizontal lines on the volcanic materials. This depth and air of mystery add to their allure.
Structure and composition of the fissures
During your visit, you’ll encounter formations about 20 meters long, composed of volcanic rock, primarily basalt. This igneous rock is characteristic of volcanic islands like the Canaries, known for its dark colour and fine texture.
In the case of Las Grietas of Lanzarote, this dark colour has lightened over time, possibly due to exposure to the sun, weather, and oxidation. The layers of their walls reveal the accumulation of various lava flows and wear processes that shaped Las Grietas over time.
Their rough texture reflects the flow of solidified lava, and different weather elements have helped give them their current shape. Their dark grey floor includes basalt particles, ash, and volcanic gravel, which were eroded and turned into a sandy, granular layer that prevents water accumulation after rain.
Comparison with similar formations worldwide
Las Grietas are often compared to the Grand Canyon (United States), also formed by rock erosion, though in its case by the Colorado River.
They are also similar to the lava tubes of Hawaii, located in the Hawaii Volcanoes National Park.
Other comparable formations include the Lava Canyons in Iceland and the Tolantongo Caves in Mexico, due to their volcanic origins.
How to reach Las Grietas and recommendations for your visit
Take the LZ-35 road between the municipalities of San Bartolomé and Tías. Then, turn onto an unpaved road (2 km) and complete the route on foot.
Previously, visitors could park near the mountain, but recently, the Tías Town Hall prohibited the use of this area due to safety concerns caused by vehicle traffic.
Upon reaching the old parking area, follow a 500-meter trail to reach Las Grietas. Flying is the fastest way to get to Lanzarote. If you are travelling from nearby areas, you can go by ferry. Numerous direct flights are available to the local airport.
We recommend opting for tours in Lanzarote, as it is difficult to reach without a guide due to lack of signage and the rocky, bumpy path.
When visiting Las Grietas of Lanzarote, keep in mind that there are several cracks of various shapes, sizes, and depths. However, the three main ones stand out due to their larger size.
The primary crack is the deepest, with tall walls of various textures and colours, while the second has lower walls. These features make this excursion easy and enjoyable, even for seniors and children. Don’t worry about extra costs, as admission is free.
Tips for a safe and responsible visit
There are no nearby shops, so you’ll need to bring provisions to enjoy your visit. We recommend carrying water and food. Don’t forget sunscreen, as well as a hat or cap, due to the intense heat. The only shade you’ll find is inside Las Grietas.
Pack your phone or camera to capture the stunning landscape of the Canary Islands.
If you dislike crowds and intense heat, plan your visit early in the morning or late afternoon to avoid peak visitor times, preferably Monday to Friday.
Exploring Las Grietas can be a medium-intensity challenge due to the narrow, cracked rock. Wear appropriate shoes for walking on uneven terrain.
Closed and comfortable sports shoes are the best choice to prevent mishaps.
Best time of year to explore Las Grietas
The best time to visit is in spring and autumn, when temperatures are more pleasant, and there are fewer visitors. This will allow you to enjoy the rocky landscape in a tranquil environment, perfect for hiking.
Check the weather before your visit. Although the weather is generally good, sudden changes can occur. Take extra care when walking in this area, as gravel and sand can cause slips.
Activities and experiences near Las Grietas
Near Montaña Blanca volcano and its cracks, other attractions await your discovery. One of them is La Geria, the local wine region. Its vineyards grow in volcanic ashes and are protected by circular stone walls. This cultivation method is unique in the world.
While in Lanzarote, include a visit to Puerto del Carmen, located 7 kilometres away, and home to beautiful beaches and luxury resorts. Meanwhile, 4 kilometres away is San Bartolomé, where Lanzarote Airport is located, offering several sites of great archaeological value.
Don’t miss exploring the capital, Arrecife, with its castles, rich seafood cuisine, and local markets. Also, visit its beautiful beaches, such as Playa Grande, Playa Quemada, Los Pocillos, and Playa Honda.
If you prefer volcanic landscapes, don’t miss the Timanfaya National Park, the most volcanic area of the island, designated as a Biosphere Reserve in the Canary Islands. Additionally, it is a Special Protection Area for Birds and boasts geological monuments like craters, calderas, cones, and lava seas.
Other must-see spots include Los Hervideros, rock formations that face the Atlantic waves, and El Golfo, a green lagoon nestled in a volcanic crater.
Tourism impact and conservation measures
After several incidents threatening the preservation of Las Grietas, authorities have taken measures to protect the area. For instance, the Cabildo of Lanzarote will implement a plan to station ten informants across the island to raise awareness of the importance of environmental preservation. Meanwhile, the Tías Town Hall conducted a geological study to take appropriate safety measures.
With this information, you’re ready to embark on your journey to Las Grietas Lanzarote. The tour will take 30 minutes to an hour—enough time to appreciate their uniqueness and connect with history and nature.
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