Forest of Fontainebleau, c. 1830, Detalj 5, NG Washing Jean-Baptiste-Camille Corot (1796-1875)

The picture has something of this: people, water, two, river, mammal, cave, group, fish, bird, side view, wildlife, tree, recreation, invertebrate, underwater.
Perhaps it’s a painting of a woman in a red dress reading a book while laying on the ground in a field with wildflowers and a stream in the background.