In 2015, geologists discovered something peculiar: identical electrical patterns beneath four locations across the globe. These places shared another connection - they were all home to famous cryptid sightings.

From the Jersey Devil to Mokele-mbembe, these creatures seemed random and unrelated. Until scientists found the underground grid.

Now research suggests these legendary beasts might be more connected than anyone imagined. What lies beneath these locations, and why are the tunnels expanding toward a central point?