Mystery in the grass around the Intel plant

While taking photos of the Intel plant, I noticed a trough in the grass lawn surrounding the factory.  In fact, there was a network of these troughs snaking through the grass.

What could they be?  Well, this is Costa Rica.  I will show more in the next few days.

Today is Sunday, so we have new photos posted on our Viva la Voyage travel photo site.  This week we are showing photos of the architecture of Portugal.