To visit this place it convenient that you consult in the tourism office of sarmiento because you must enter to a particular establishment (Farm "Los Manantiales") and it will be right concur with guide, equipped with lantern and helmet.
After walking 45km. at west direction on asphalt route, you enter to place of the farm for make a walk tracking of 2500mts. traveling a valleys with flowings, ascending the hillside and joining in a natural tunnel of 400mts. of run (with galleries and ramifications).
Is advisable wear long-sleeved clothe and firm sole shoes.
The duration aproximate of run, since the locality of Sarmiento and coming back is 3,5hs.