Indian Springs

[lucca brassi]

Thanks , well interesting , probably you don't wearing compases (or you do ) ?

I have in mind an aricle reading not that long ago Karst Worlds: Underwater cave-mapping sensor for mapping caves ( i have thought that because part of system also is a magnet hall sensor which might be confused by some iron anomalies )

 

[PfcAJ]

I wear a digital compass and I carry an orienteering compass in my wet notes for surveying.

 

[Hartattack]

Great video and pics, looks like an awesome dive.