I think I can figure out what makes this one secret... The hush that comes over one who is contemplating going through the gate and venturing into the seductive darkness just beyond the shock of light green...That is a secret place for sure... where any number of magical, secretive, breathtaking things may occur! and. . . when you return you must keep the secrets!!!
"Mary: Please might I have a bit of earth? To make a garden? I love gardens. ~The Secret Garden Archibald Craven: [looking away] There was someone... someone very dear... who loved gardens, too. Archibald Craven: [appears near tears and then abruptly changes tone] Go now, leave me. Mary: [curtsies in relief and leaves] Thank you.