You leave the grate like a person who has finished a dare and found it was a bell you rang at yourself.

The echo sits in your ears longer than is fair. Cold climbs your sleeves. Pride sits beside you on the packed path and does not help.

Priya’s lamp finds you, or Wen’s, or both. They do not scream. Coat, cocoa, a look that is relief wearing a frown. You are in the cabin. You are embarrassed in a way that will make a very useful story if you tell it true.

“The hill does not joke,” Priya says, which is not cruelty. “Your old stories knew that. They dressed it as a little spirit so tired miners would listen. Next time listen to the lock.”

In the morning you help make a sign for the grate with Ellis, block letters that do not waste paint:

KNOCKING IS NOT AN INVITATION. STAY OUT. Echoes are physics. Bad air is chemistry. Stories can stay.

You are safe. You are done rattling. The legend warned you for a physical reason, and you will not spend your next courage on a padlock.

THE END

What you learned: an echo in a mine mouth is your own sound returning from rock. Sealed mines can hold bad air. Cold and locked grates are the real hazard, not a trickster spirit. Old stories often hide a physical warning. Walking away beats rattling a door that said no.