A dryad Adolphe William Bouguereau (1825-1905)

The picture has something of this: nude, people, water, nature, tree, woman, body, outdoors, naked, beautiful, girl, man, relaxation, shirtless, wood, recreation, lifestyle, leisure.
Perhaps it’s a painting of a naked woman laying on the ground with her head down and her hands behind her back, with grass and trees in the background.