The sand is evidently used for mixing with cement for concrete for construction. I was told that the crew with the oxen get the equivalent of $8 US dollars for each ox cart load of sand.
I don't know about you, but it seems like a lot of work (for the oxen as well as the men) for $8. The average income in Costa Rica is about $10,000, which is more than triple the average income in neighboring Nicaragua. The most difficult and low paying jobs in Costa Rica are done by Nicaraguans. Perhaps as much as 20% of the people in Costa Rica are Nicos, many of whom came across the border without going through immigration procedures.
We are showing photos of one of the world's most elegant hotels, Villa d' Este, on the shores of Lake Como, Italy, on our Viva la Voyage travel photo site.