The Wild Wild West (1965)

S3E8 The Night of Montezuma's Hordes

Title: The Quest for Montezuma's Treasure Plot: A long-lost Aztec map revealing the location of Montezuma's hidden riches is unearthed in Mexico, indicating a site in Texas. To prevent any diplomatic tensions, West and Gordon join forces with Colonel Sanchez from Mexico and a renowned archaeologist on a perilous journey through the Texas desert in pursuit of the fabled treasure.