99 word prompt : Secrets

January 4, 2018, prompt: In 99 words (no more, no less) write a story about Copper Country. It can be any place, fictional, historical, or on another planet. Go where the copper leads.

If you want to participate, here’s the link:  https://carrotranch.com/2018/01/05/january-4-flash-fiction-challenge/

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Another basement, Dr. Williams?”   

Dust flew around my hand on the oak railing.

“Your paper about copper mines in Michigan, and worldwide trade over 10,000 years ago, turned heads.”

At basement bottom, a coffin-shaped box was being carried out the door.

“What is this place?” 

“The world can’t know humans vacillated between space and stone-age for over 1,000,000 years. You’re caretaker of this secret.”

I was in awe of a radio built 950,000 years ago when the door slammed.

I heard it lock.

Behind the door was a message: “You will not leave this place until you die.”