Limestone quarries and cave protection

It happened in Hungary several times that a limestone quarry opened the entrance of a new, unknown cave during its activity such as the case was in the Villány Mountains, in Budapest, and in Kesel?, Naszály or Esztramos Hills. It is right that the natural caves are protected, but what is the solution in such cases? Closing the mine? Absolving the cave from protection? It is a difficult question. The real way: we must weigh. Which is more expensive? How valuable and unique is the cave? How big is the economic loss if we close the mine? And how serious is the harm if it is allowed to annihilate the value of nature, which is impossible to reproduce? Examples follow from Hungary.