When he gets hungry he picks up his rifle and goes hunting or heads on a three-hour trek down the mountain to the nearest settlement of San Pedro de Colalao. A creek is his main source of water.
'It's the purest, richest water there is' he says.
His cave mates? Eleven roosters and two goats that roam the mountainside during the day and return at night looking for shelter from pumas and other predators. The crows of the roosters wake him up at around 3 a.m. every morning and he begins the day.
His only technological gadget is a small, battery-powered radio, but he has a hard time tuning into stations because the signal is weak up the mountain.
He walks three hours every day, climbing the steep mountainside to reach his cave. Luca's skin is weather-beaten and he has few teeth left, but he seems much younger than a man who is almost 80. (pictures at the link)