News from Spain is that Tony has passed a 140m sump at a maximum depth of 30m to join C4 (La Verdelluenga) to 2/7. See
https://www.facebook.com/ArioCavesProject/?hc_ref=NEWSFEED&fref=nf
News from Spain is that Tony has passed a 140m sump at a maximum depth of 30m to join C4 (La Verdelluenga) to 2/7. See
https://www.facebook.com/ArioCavesProject/?hc_ref=NEWSFEED&fref=nf