Highlight • Cave
Hiking
4.4
(31)
Furna Ruim, often referred to as the "Bad Cave," is a remarkable volcanic cave situated on Faial Island in the Azores, Portugal. Found within the Capelo parish, near the municipality of Horta, this geological wonder is located at an elevation of approximately 446 metres. Its distinctive subvertical formation is a testament to ancient lava flows, making it a significant natural monument and a key feature of the island's volcanic landscape.
What truly captivates visitors to Furna Ruim is the allure of its mysterious interior and the challenge of discovering its entrance. Hikers and explorers are drawn to the unique opportunity to delve into a significant volcanic cavity, offering a glimpse into a subterranean ecosystem. The sense of adventure in locating this hidden entrance adds to the overall experience, making it a memorable destination for those seeking geological exploration on Faial Island.
Before venturing to Furna Ruim, it's essential to be prepared for challenging terrain. Given its nature as a volcanic cave, appropriate footwear with good grip is highly recommended. Exploring the cave itself often requires specialized equipment and, for safety, should ideally be undertaken with experienced guides or as part of an organized expedition. Understanding the Furna Ruim cave terrain description difficulty is crucial for a safe and rewarding visit.
While specific seasonal recommendations for Furna Ruim cave are not widely publicized, the Azores generally offer pleasant conditions for outdoor activities for much of the year. The primary activity here is speleology, or cave exploration, alongside hiking to the cave's entrance. Those interested in the Furna Ruim cave natural features and geology will find it a compelling site, best enjoyed when weather conditions are stable for the approach hike.
The experience of Furna Ruim is defined by its raw, untouched character. For a long time, the cave's interior remained largely undocumented, adding to its mystique. Visitors who manage to explore beyond the hidden entrance are met with a unique subterranean world, home to various endemic invertebrates and spiders, highlighting its ecological importance as part of the Natura 2000 network. This offers a rare chance to witness a truly unique natural habitat.
To plan your visit and discover routes leading to this intriguing location, komoot offers a variety of trails for hikers and adventurers. Whether you're looking for Furna Ruim cave trails or simply exploring the surrounding area of Faial Island, you can find options that suit your skill level. Explore routes that highlight the Furna Ruim cave geological features and nearby attractions, helping you make the most of your Azorean adventure.
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Nearby routes
Best routes near Furna Ruim

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Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.

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4.5
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Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.
Details
Informations
Elevation 450 m
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Thursday 11 June
22°C
18°C
20 %
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Max wind speed: 13.0 km/h
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Furna Ruim is known for its hidden entrance, adding to its mystique. While specific directions are not widely publicized, community tips suggest it requires careful navigation. Hikers should be prepared for an adventure to locate this unique volcanic cavity.
The hike to Furna Ruim involves challenging terrain. Given its volcanic nature and location on Faial Island, expect uneven paths that may require good balance and sturdy footwear. The highlight is categorized as 'challenging' and 'forest', indicating a demanding approach.
Information regarding dedicated parking directly at Furna Ruim is limited. Visitors typically park at a suitable point along the nearest accessible road and then proceed on foot. It's advisable to check local maps or visitor information centers for the most convenient and safe parking options.
While the cave itself is a natural monument and part of the Natura 2000 network, general public access to the exterior and approach trails typically does not require a permit. However, exploring the interior of the cave, especially given its depth of 55 meters, often requires specialized equipment and should ideally be undertaken with experienced guides or as part of an organized speleological expedition for safety reasons.
Due to the challenging terrain and the nature of the cave's hidden entrance and deep interior, Furna Ruim is generally not recommended for young children or casual family outings. Similarly, the difficult access and potential need for specialized gear make it unsuitable for dogs.
Furna Ruim is a significant geological feature characterized by its volcanic origin and subvertical development, formed by the emptying of lava from the top. Its geomorphology is entirely volcanic, offering a unique insight into the island's ancient lava flows and subterranean formations.
While the intro mentions that exploring the cave's interior should ideally be done with experienced guides, specific public guided tours for Furna Ruim are not widely advertised. It is recommended to inquire with local tourism boards or specialized adventure tour operators on Faial Island for potential speleology expeditions.
For the approach hike, appropriate footwear with good grip is highly recommended due to the challenging and potentially uneven terrain. If you plan to explore the cave's interior, specialized equipment such as helmets, headlamps, and climbing gear would be essential, and such exploration should only be attempted with expert guidance.
Furna Ruim is ecologically important, being part of the Natura 2000 network. It is home to various species, including specific types of invertebrates such as Conoppia palmicincta and Xenillus discrepans azorensis, as well as spiders like Lepthyphantes acoreensis. This highlights its value as a unique subterranean ecosystem.
Furna Ruim is located in the Capelo parish, within the municipality of Horta on Faial Island. While the immediate vicinity of the cave is natural and undeveloped, the town of Horta offers a range of cafes, restaurants, and accommodation options. It is advisable to plan for amenities before or after your visit to the cave.
While specific seasonal recommendations for Furna Ruim are not widely publicized, the Azores generally offer pleasant conditions for outdoor activities for much of the year. The primary consideration is stable weather for the approach hike. Spring and early autumn often provide a good balance of mild temperatures and less rainfall, making them ideal for exploring the island's natural attractions.