John Everett Millais, The Vale Of Rest, 1858-59. Tate Museum, London. Via WikiPaintings.
From the Tate’s website:
Of all the pictures that Millais created, this was his favourite. […] The nun on the left is digging a grave, which is positioned in such as way that the viewer appears to be in it alongside her. The second nun’s rosary has a skull attached to it. In the background a coffin-shaped cloud—a harbinger of death, according to Scots legend—appears in the evening sky. […]
One October evening, he was so taken by the beauty of the sunset that he fetched a large canvas and set to work immediately. Following the Pre-Raphaelite aesthetic of truth to nature, he painted the bulk of the picture, including the figures, in the open air. The setting—excluding the tombstones, but including the terrace, shrubs and the wall in the background, with poplars and oak trees behind it—was Effie’s [Millais’ wife’s] family’s garden at Bowerswell, Perth. […] The grave and gravestones were painted some months later at Kinnoull old churchyard in Perth.