The Pyramids of Visoko

The small town of Visoko, nestled in the heart of Bosnia and Herzegovina, has become an unlikely epicentre of a global archaeological debate. Since 2005, claims have been made that the prominent hills surrounding the town, particularly Visočica Hill, are not natural formations but rather ancient, man-made structures – the Pyramids of Visoko. This audacious hypothesis, put forward by Dr. Semir Osmanagić, a Bosnian-American author and businessman, has captured the imagination of millions, drawing a steady stream of curious visitors and volunteers to the region, even as it faces overwhelming skepticism from mainstream archaeologists and geologists.
At the core of Osmanagić’s theory is the assertion that Visočica Hill, which he renamed the ”Pyramid of the Sun,” along with nearby hills dubbed the ”Pyramid of the Moon,” ”Pyramid of the Dragon,” ”Temple of Mother Earth,” and ”Pyramid of Love,” constitute an ancient pyramid complex, the largest and oldest on Earth. He points to the seemingly geometric slopes, specific orientations to cardinal directions, and what he claims are artificially shaped blocks and underground tunnels as evidence of an advanced prehistoric civilisation. These claims have been met with fervent support from enthusiasts and equally vehement rejection from the scientific establishment, making the Pyramids of Visoko one of the most controversial archaeological sites in the world.
The Proponents' Case: Evidence of Design?
Dr. Osmanagić and his foundation, the ”Archaeological Park: Bosnian Pyramid of the Sun Foundation,” have meticulously worked at the sites for nearly two decades, conducting excavations and presenting what they believe to be compelling evidence of artificial construction. They highlight the striking symmetrical shape of Visočica Hill, asserting that its four triangular faces and its precise alignment to cosmic north, reportedly within less than one degree, could not be the result of natural geological processes alone.
Excavations have revealed what are presented as paved entrance levels and large stone blocks beneath layers of soil and vegetation. Analyses of these blocks, carried out in various institutes, are claimed to show they are made of a high-quality, artificial concrete, superior to modern concrete in its composition and binding properties. Furthermore, extensive networks of underground tunnels, known as the Ravne Tunnels, stretch for kilometres beneath the valley. Proponents argue these tunnels are not natural caves but engineered passages, with some sections cleaned and accessible to the public. They also claim to have detected unusual energy phenomena, such as a focused energy beam emanating from the apex of the Pyramid of the Sun, and beneficial electromagnetic fields within the tunnels, leading to ideas about healing properties and ”cosmic internet” connections.
The Scientific Counter-Argument: Geological Formations
The vast majority of geologists, archaeologists, and other mainstream scientists firmly dismiss the claims of man-made pyramids in Bosnia. They assert that the hills in question are entirely natural geological formations, specifically a type of landform known as ”flatiron hills” or ”hogbacks.” These formations are common worldwide and arise from the differential erosion of tilted layers of resistant rock overlying softer strata. Over millennia, the softer rock erodes away, leaving the harder, often triangular or pyramidal, layers exposed.
Numerous scientific expeditions and studies have concluded that there is no credible evidence of artificial construction at Visoko. Experts from the European Association of Archaeologists, the German Archaeological Institute, and other reputable bodies have issued strong condemnations, labelling the claims as ”pseudoarchaeology” and a ”cruel hoax.” They point out that the alleged ”concrete blocks” are natural conglomerates of rock and sediment, and the ”tunnels” are natural karst cave systems. Concerns have also been raised about the potential damage being done to genuine medieval and Roman archaeological sites in the Visoko area due to the focus on the pyramid claims.
The Ravne Tunnels: An Underground Labyrinth

Despite the controversy surrounding the pyramid claims themselves, the Ravne Tunnels present an intriguing aspect of the Visoko phenomenon. While mainstream science views them as natural cave systems, proponents of the pyramid theory claim they are an integral part of the ancient complex, a vast, prehistoric underground labyrinth connecting the various ”pyramids.” Visitors can explore significant lengths of these cleaned and illuminated tunnels, which have become a major draw.
Within the Ravne Tunnels, visitors encounter large megalithic blocks, which some interpret as evidence of ancient engineering, while others see them as natural geological features. The atmosphere inside the tunnels is notably cool and consistent, and many visitors report feelings of well-being and improved health, attributing this to alleged high concentrations of negative ions and specific energy frequencies. Regardless of one’s stance on their origin, the tunnels offer a unique and somewhat mystical experience, a journey into the earth that feels both ancient and enigmatic.
Impact and Legacy
The Pyramids of Visoko project, despite lacking scientific endorsement, has had a undeniable impact on the local economy and international perception of Visoko. What was once a relatively obscure town has transformed into a significant tourist destination, attracting hundreds of thousands of visitors annually from across the globe. Volunteers from dozens of countries regularly participate in the excavations, contributing labour and enthusiasm to the project.
This influx of tourism has brought much-needed economic revitalisation to the region, creating jobs and boosting local businesses. However, the project also highlights the tension between academic rigour and popular fascination with alternative histories. While the scientific community largely dismisses the pyramid claims, the enduring appeal to the public underscores a widespread desire for narratives that challenge conventional understanding of ancient human capabilities and the origins of civilisation. The controversy itself, amplified by media attention, only seems to fuel further interest.
Visiting the Pyramids of Visoko: A Journey of Discovery
For those eager to form their own opinion on the Pyramids of Visoko, a visit to the sites is highly recommended. The town of Visoko is easily accessible, approximately 30 kilometres north of Sarajevo, the capital of Bosnia and Herzegovina. Daily tours are available from Sarajevo, typically including transport, guided visits to the ”Pyramid of the Sun” viewpoints, and an exploration of the Ravne Tunnels.
The ”Archaeological Park: Bosnian Pyramid of the Sun Foundation” manages the primary sites and offers guided tours. Visitors can walk up the slopes of Visočica Hill to observe its pyramidal shape and the exposed ”blocks.” The highlight for many is the guided tour through the Ravne Tunnels, where one can experience the unique atmosphere and see the alleged megalithic structures. Comfortable walking shoes and a jacket for the cool tunnels are advisable. Whether you arrive as a sceptic, a believer, or simply a curious traveller, the Pyramids of Visoko offer a fascinating and thought-provoking experience, inviting you to ponder one of Europe’s most captivating modern mysteries.