The lava flows of the San Juan volcano in 1949 buried part of the best agricultural land in the neighborhood, generated an extensive badlands within which an exceptional volcanic tube was formed almost five hundred meters long, about 3 meters wide and high. variable, between 1 and 6 meters. Its scientific interest lies fundamentally in the geological formations, as well as in its biological importance as it houses a fauna that is highly adapted to underground life.
Duration:: 2 hours.
Distance: 1,2 Km.
Observations: Bring drinks and sports clothing and sun protection.