Finding Spanish Silver Coins Mystery at Blind Frog Ranch

Duane and Chad stumble upon Spanish silver coins possibly left by 1782 conquistadors after detonating a cave entrance. Could this be the treasure they are looking for?

About Mystery at Blind Frog Ranch:
Duane Ollinger has sunk everything he has into hunting for what he believes is a vast fortune of gold on his property. But with each step he takes closer to finding the treasure, the land seems to hold on tighter, stopping him in his tracks.