Cavern exploration

[Agenotfound]

Quite a slow news day today...

So take a look at this impressive galery of cavern explorers in Spain. (link to the Daily Telegraph website)

If they keep going down maybe they'll reach Dn'i via the core

(the Picture N°10 is particuliary impressive !)

EDIT:Oups wrong section, can someone move this to off-topic please ?

[Chuckles58]

Thanks for the link, Agentnotfound. For some reason I am more interested in caves than I used to be.

[J'Kla]

I did not see one linking book either