The Harvesters, oil on wood by Pieter Bruegel the Elder, 1565.
This panel belongs to a series and the cycle originally included six paintings showing the times of the year. Bruegel’s series is a watershed in the history of western art, the religious pretext for landscape painting has been suppressed in favor of a new humanism.
The Met Museum in New York has released 375,000 images from their collection to the public domain for free and unrestricted use: slideshow.
Link to Met Museum’s artworks in the public domain.