Foundation’s field geologist Mejra Kozlo has done several negative ion measurements in December 2017 and January 2018. Values are higher (meaning healthier) than in 2015 and 2016.
For example, concentration of negative ions in December 2017 by the egg-shaped block near the entrance were at the level of 17.900 per cubic centimeter, near block K-2 at 24.000, in the Healing Chamber 45.000, by K-5 at 37.000 and in Orbs Chamber 36.000.
On January 8, 2018 another measurement was performed. Egg-shaped block had 25.000 negative ions per cc, K-2 around 31.000, Healing Chamber 75.000 and Orbs Chamber 87.000.
These values are ten times higher than in the forest on the Igman mountain which is considered the healthiest place in Bosnia.
Oxygen values are at the stable (and ideal level of) 21%. Temperature in the tunnels is 12-14 degrees Celsius, and humidity in the range 75-85%.