Stefan Gruschwitz, who’s associate of the ‘Archaeological Park: Bosnian Pyramid of the Sun’ Foundation, has been regularly measuring values of the negative ions in Underground Labyrinth Ravne. He’s been taking groups from Germany, Austria, Switzerland, Sweden and other countries for the night meditations. He chooses the most pleasant and healthiest parts of the tunnels during his stay.
These are the most recent values of the negative ions:
August 30, 2018:
Outside: 500 negative ions per cubic centimeter
Egg-shaped block: 25.000
Healing Chamber: 45.000
Mega-ceramic block K-2: 45.000
August 31, 2018:
Outside: 200 negative ions per ccm
Egg-shaped block: 30.000
Healing Chamber: 55.000
Meenal Mehta tunnel: 45.000
September 2, 2018:
Outside: 700 negative ions per ccm
Egg-shaped block: 25.000
Healing Chamber: 60.000
Mega-ceramic block K-2: 65.000
Mega-ceramic block K-5: 55.000
September 3, 2018:
Outside: 1.000 negative ions per ccm
Egg-shaped block: 15.000
Healing Chamber: 40.000
Mega-ceramic block K-2: 42.000
September 4 2018:
Outside: 400 negative ions per ccm
Egg-shaped block: 23.000
Healing Chamber: 50.000
Mega-ceramic block K-2: 50.000
