The original article by Mairobi Herrera appears in the Spanish language site listindiario.com/la-republica. See the small photo links showing what appears to be the 2 bas-relief carvings and another more traditional pecked petroglyph, which appears to have been made on a curved surface, producing a similar effect.
In the article Lopez regrets the irony that the Caribbean has large numbers of rock art locations, but very few local archaeologists who specialize in rock art. The article implies that the art has always been exposed to some light levels and substantial air exchange, and would not necessarily be threatened by controlled tourism.
Something is not right. This message is just to keep things from messing up down the road