It was the most curious example of the weathering of rocks that we had ever seen.
From Penas Cargadas we rode on to the farm of Guajalote, where the Company has forests, and cuts wood and burns charcoal for the mines and the refining works.

Don Alejandro, the tenant of the farm, was a Scotchman, and a good fellow.

He could not go on with us, for he had invited a party of neighbours to eat up a kid that had been cooked in a hole in the ground, with embers upon it, after Sandwich Island fashion.
This is called a _barbacoa_--a barbecue.

We should have liked to be at the feast, but time was short, so we rode on to the top of Mount Jacal, 12,000 feet above the sea, where there was a view of mountains and valleys, and heat that was positively melting.

Thence down to the Cerro de Navajas, the "hill of knives." It is on the sides of this hill that obsidian is found in enormous quantities.