Father-and-son-duo Chad and Duane Ollinger are still on the hunt on Mystery at Blind Frog Ranch. They come across an underwater cavern while searching for 500-year-old lost treasure. Mystery at Blind Frog Ranch follows a team looking for ancient Aztec treasure, believed to be buried in caves underneath their ranch in Utah. The new season airs on November 20, and we can’t wait. Blind Frog Ranch cast find cavernFor more than a decade, Duane and Chad Ollinger have invested their all into locating a 500-year-old lost Aztec treasure they believe is hidden in a vast system of underground caves burie…