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!!!
"The Secret Garden" [no indication by the artist of where, though I have seen it identified elsewhere as Provence, France.] - In Artwork : Moon and Mystery by "Artist and Photographer Angela Jayne Latham (nee Barnett), ...a published Landscape Photographer and Digital Artist."