"The Lost Mine" Exists Only in Zelda: Breath of the Wild

There is no real "Lost Mine." It's a fictional location in The Legend of Zelda: Breath of the Wild (2017).

In-Game

• Location: Eldin Canyon, near Goron City
• Quest: "The Lost Mine" (side quest from NPC)
• Reward: Ruby / Diamond / Flint
• Features: Luminous stone deposits, fire keese, mine cart track

Real "Lost Mines" (Folklore)

• Lost Dutchman's Gold Mine (Superstition Mtns, AZ)
• Lost Adams Diggings (NM/AZ border)
• Pegleg Smith's Mine (CA/CO desert)
• Sutter's Lost Mine (CA gold rush)

All unproven. Legends > reality.