Stefan Paul Gruschwitz from Geoviva company has been doing regular measurements of the concentration of negative ions in Underground Labyrinth Ravne. He’s been using two Air Ion Counters. These are the most recent values measured (negative ions per cubic centimeter):
Sunday, July 15, 2018
– Outside: (1) 2.000, (2) 3.000
– Eggshaped block: (1) 20.000, (2) 30.000
– Healing Chamber: (1) 30.000, (2) 50.000
Monday, July 16, 2018
– Outside: (1) 2.000, (2) 3.000
– Eggshaped: (1) 20.000, (2) 30.000
– Healing Chamber: (1) 35.000, (2) 45.000
Stable and high values of the negative ions are very important for the tunnel functioning.
