Mallorca is world-renowned for its dreamlike beaches and stunning Mediterranean landscapes, but beneath the surface lies a hidden world that few have had the chance to explore. Along the island’s southeast coast, extraordinary sea and underground caves await, shaped by natural forces over thousands of years. If, like us, you crave authentic experiences with a touch of mystery, join us on this journey to the depths of the Earth.

Hidden mysteries on Mallorca’s southeast coast 

Beneath the glowing Mediterranean sun, the slow erosion of rock over millions of years has created natural masterpieces in stone. Mallorca’s caves formed within carbonate rocks dating from 11 to 5.3 million years ago, during the Upper Miocene period, a time when the Mediterranean Sea enjoyed a much warmer climate. These rocks developed through the accumulation of coral reefs and seashells on the seabed.

Made up of minerals like calcite and aragonite, these calcareous rocks dissolve easily when rainwater filters through cracks and porous surfaces. These water filtrations slowly form cavities which, over time, evolve into halls and underground lakes. As the formations expand, stalactites begin to grow from the ceiling, while stalagmites rise from the ground as drops of mineral-rich water fall. Sometimes, these structures meet to form dramatic stone columns.

Mallorca’s caves are proof of nature’s patience and power. With their submerged passages, towering stalactites, and fantastical shapes, some feel like they're lifted straight from the pages of an imaginary world.

It’s said that Jules Verne may have visited the Caves of Artà and the Caves of Hams in Mallorca and that they inspired parts of his work. Journey to the Center of the Earth and Twenty Thousand Leagues Under the Sea include descriptions that mirror those of Mallorca’s caves. While it’s never been confirmed whether Verne personally visited the Balearic Islands, he certainly had access to vivid local sources — from his friendship with the writer George Sand to connections with astronomer François Aragon, artist Gaston Vouillier, Archduke Ludwig Salvator, and other notable figures who knew the island intimately.

50 kilometres of underwater caves 

Recent explorations have revealed over 50 kilometers of submerged karstic cavities along the coasts of Llevant and Migjorn — offering scientists a new perspective on Mallorca’s flooded endokarst systems.

The eerie beauty of these karst caves stirs something within us: their fantastical formations shape alien landscapes, completely different from what we see above ground. When these spaces are flooded, their magical atmosphere becomes even more intense. Exploring such breathtaking environments is only possible for a select few — the rest of us must rely on the photos and videos captured by cave divers. Though so close to the surface, these hidden corners remain one of the great terrae incognitae of the 21st century.

Mallorca harbors countless geological treasures. What we know today may be only the tip of the iceberg. As cave divers continue their expeditions, the island’s underground secrets slowly come to light — offering wonder and insight with every new passage discovered.

Pic by: Mallorca Magazin

Sea and underground caves: two worlds in one

Exploring Mallorca’s underground landscapes is an unforgettable adventure. First, you’ll need to choose your path: from easily accessible caves, perfect for families and first-timers, to more challenging passages that demand courage and a true sense of adventure.

Some caves are directly connected to the sea, offering the chance to dive into crystal-clear waters and discover a magical world beneath the surface. Others invite visitors to wander through narrow, shadowy paths deep into the heart of the island.

A destination for adventure lovers 

Mallorca’s subterranean network is a dream for lovers of adventure tourism. Walking through tight passageways, feeling the cool air from ancient rock formations, and hearing the echo of every drop of water… it’s an experience that goes far beyond a simple excursion. It’s a deeply personal connection with the Earth and its mysteries — a reminder that Mallorca holds wonders around every corner, waiting for curious explorers to step into the unknown.

The Most Famous Caves in Southeast Mallorca

The southeast of Mallorca is home to some of the island’s most spectacular caves.

The Cuevas del Drach, located in Porto Cristo and discovered in 1896 by French speleologist E. A. Martel, are perhaps the most iconic. Their highlight is the breathtaking underground lake, Llac Martel, which visitors can cross by boat while enjoying a live classical music concert.

Just nearby, the Cuevas dels Hams — discovered in 1905 — are known for their whimsical hook-shaped formations and their own underground lake, the “Sea of Venice,” which adds a magical touch to the visit.

For those seeking a wilder, less-traveled experience, Cova des Pirata, near Cala Varques, is a hidden gem. This sea cave is filled with otherworldly stalactites and stalagmites — a real-life fantasy landscape accessible by sea.

Another extraordinary site is Sa Gleda Cave, considered the largest underwater cave system in Europe. With 13 kilometers of galleries reaching depths of 23 meters, it’s an ideal spot for experienced cave divers and speleologists.

Each of these caves offers a unique adventure — a chance to step into the unknown and witness the breathtaking beauty hiding beneath Mallorca’s surface.

Tips for your subterranean adventure 

Do your research: Before venturing out, check the access and conditions of each cave. Some require special equipment or the guidance of an expert.

Respect nature: These formations are fragile and irreplaceable. Enjoy the experience while ensuring everything stays just as you found it.

Explore nature and connect with the authentic Mallorca 

The southeast coast of Mallorca is full of contrasts; where light meets shadow, and modern life blends with ancient history. Visiting one of the island’s many caves or experiencing underwater exploration is a thrilling way to discover new perspectives and lesser-known sides of Mallorca.

With every step through these natural passageways, you weave a deeper connection to the island. This isn’t just an excursion — it’s a journey to the heart of nature, where every echo and every shadow tells a story from the past.

Come spend a few days with us at Inturotel, and dare to uncover the hidden magic of Mallorca.