This study investigates the public health and epidemiological potential of the Ravne Tunnel Complex in Bosnia-Herzegovina, a unique subterranean environment exhibiting some of the highest recorded concentrations of negative air ions (NAls) globally, peaking at 340,000 ions/cm³. Through the integration of empirical ion measurements, visitor health testimonials, and peer-reviewed biomedical literature, the study evaluates the microbial suppression and respiratory benefits associated with prolonged exposure to highly ionized air.

Park Ravne 2 in Visoko, Bosnia-Herzegovina, represents a remarkable transformation of 100,000 square meters of swampy, neglected, and contaminated land into a vibrant ecological, archaeological, and cultural sanctuary. Initiated by a non-profit foundation without government support, this project has evolved into a multidimensional space that blends environmental restoration, underground archaeological exploration, and community-based programming.

This study presents clinical and biomedical evaluations of the Ravne Tunnel Complex, an artificially made underground network near the Bosnian Pyramid of the Sun, as a source of natural therapeutic effects. The research integrates findings from multiple pilot studies, medical observations, and Monte Carlo simulations to assess the efficacy of negative air ions (NAIs), elevated oxygen levels, and low electromagnetic pollution in the tunnel environment.

This groundbreaking experimental study explores the relationship between human consciousness and measurable physiological and energetic changes during deep meditative states. Conducted in controlled conditions in Visoko, Bosnia-Herzegovina, the study involved 37 participants who underwent guided meditation or prayer while being continuously monitored using electroencephalography (EEG), high-precision digital weighing instruments, and New Energy Vision (NEV) imaging.

The Ravne Tunnel Complex, located beneath the Bosnian Pyramids in Visoko, Bosnia-Herzegovina, represents one of the most enigmatic and potentially transformative archaeological sites in Europe. This study presents a comprehensive overview of scientific measurements recorded within the Ravne tunnels over the past several years.

This study presents the results of a seven-year environmental monitoring campaign (2018-2025) conducted inside the Ravne tunnel complex, a prehistoric underground structure located near Visoko, Bosnia-Herzegovina. Biannual measurements were carried out using calibrated scientific instruments to assess air ion concentrations and related microclimatic parameters.

Objectives: This study aimed to explore the possibility of recording the influence of Bosnian structures (pyramids) on Bio-Well sensor. Methods: The Bio-Well device with a specially designed Environment Energy Sensor called the 'Sputnik' was used to monitor the environment's parameters, allowing us to study geo-active zones. Results: The energy parameter of the Sputnik sensor signal at several Bosnian complexes was significantly higher than outside the complexes.

This study explores water collected from the Ravne Tunnel Complex in Visoko, Bosnia-Herzegovina, a site associated with the Bosnian Pyramid structures[cite: 1]. Through a combination of standard laboratory analysis and advanced holistic techniques, we investigate the physical purity, mineral content, and energetic characteristics of this unique subterranean water[cite: 1]. [cite_start]The findings suggest that Ravne water, exposed over time to a high concentration of negative ions and possible pyramid-induced energy fields, exhibits characteristics of highly structured, bioenergetically vital water[cite: 1].

Over seven years of monitoring (2018–2025), the Ravne Tunnel Complex in Visoko has exhibited exceptionally high and unusually stable concentrations of negative air ions (NAIs) in deep tunnel zones (typically 40,000–330,000 ions/cm³, peaking above 300,000 in winter), alongside very low gamma radiation (≈0.06–0.12 µSv/h), no detectable electromagnetic fields (0.00 mW/cm²), high relative humidity (≈73–81%), constant cool temperature (≈11–15°C), and normoxic oxygen (≈19.0–20.9%). Together these parameters define a consistently ion-rich, low-noise, microclimatically stable environment unlike typical outdoor sites. Clinical pilot work and probability modeling suggest rapid, measurable improvements in surrogate health markers after 45–90 minutes of exposure: improved arterial elasticity, blood glucose, inflammatory indices, and live-blood microscopy (LBA) morphology, with Monte Carlo simulations indicating equivalence or superiority to pharmaceutical benchmarks in a substantial fraction of iterations. While randomized controlled trials (RCTs) are needed, these findings support the concept of environmental therapeutics —leveraging specific microenvironments as non-pharmacological, complementary interventions in integrative medicine.