I'm cutting wood in the forest when all at once I hear what sounds like an army riding towards me. I run up the closest tree and I see forty men riding fast, sending up a cloud of dust.
They stop right under my tree, dismount, and tie their horses. Then their finely dressed captain goes to the mountain side and calls, "Open Sesame!" A door in the mountain opens, the men go in, and the rock closes behind them.
Wonder of wonders! What do you suppose is in there?
Ali Baba in The Forty Thieves, Blue Fairy Book