The Ollinger family explore ancient secrets about what lies beneath their land and embark further into the unknown when MYSTERY AT BLIND FROG RANCH returns on Wednesday, November 15 at 10pm ET/PT on Discovery Channel. Stretching across 160 acres of remote and rugged terrain in Northeastern Utah, Blind Frog Ranch is shrouded in legends of ancient civilizations and mysterious phenomena.

Duane and Chad Ollinger have spent close to a decade trying to unearth $3 billion in Aztec gold that they believe is hidden in a vast network of underground caverns deep within the ranch. After arriving for the season, they discover that claim jumpers have been illegally digging on the property, attempting to locate and steal the treasure – leading to a tense and volatile confrontation.

The threat of poachers only fuels the urgency of the Ollingers' pursuit for treasure. This season, they bring in cutting-edge quantum technology, as well as new experts, uncovering an enormous cavern system that could house the treasure. They also discover a series of clues, leading them to believe that the Aztecs were not the only ones hiding treasure below Blind Frog Ranch. No one can predict the strange things that surface when they begin the underground search, changing everything they thought they knew about what really lies beneath the ranch.

Fighting the land and risking their lives to track down the Aztec billions, Duane and Chad might finally find what they've been searching for...and more