Spoiler
"Grandpa in Pueblo Faro is another person that leads you to a stone. He can be found in the yard of a house, in the northeastern part. From Camillo the mechanic, look to the northeast, towards the cross. There is a streetlamp and and archway on the other side of the street to the north, enter that archway and Grandpa is to your right. Bring a bottle of tequilla otherwise he wont talk. You can buy a bottle at the store with the sign "Todo para la costura" thats on the east side of the plaza in front of the guerilla headquarters. Talk to him about stories, listen about the one from the landslide and ask him where that guy wanted to dig and you get a new mission. Behind his house, to the west is a free standing archway. Its the beginning of a small trail that leads up the hill, first to the west then stright to the east. Follow it to the site (bring TNT). There is a red highlighted area, equip the TNT into a weapons slot and use it, then go close to the TNT site and press and hold Enter. Once in place, get away, a bit around the corner on the trail. Once it blows open, go into the cave and open the basket on the left, there is another xenus fragment. The other basekt contains an antique gold piece."
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