Radiation in Caves
My local cave (Giants Hole, UK) is speculated to be one of the most radon-heavy caves in the world.
Apparently levels of radon can exceed 155,000 bq m3. Personally I have only been on 4 trips within the cave, however it is extremely popular amongst cavers & i know guides regularly take groups of scouts in, & others who go on regular long deep trips within the system.
I'm very curious to know generally how dangerous this is to human health, in terms of the level of radiation you would be exposed to (relativley high/nothing of concern etc)
Interested to hear your thoughts or more facts about this. (Cross-over from r/caving)