The Mouth of a Cave

The Mouth of a Cave is a late 18th century painting by French artist Hubert Robert. Done in oil on canvas, the painting is currently in the collection of the Metropolitan Museum of Art.
Description.
"The Mouth of a Cave" was painted by Robert as part of a set of six paintings for the younger brother of Louis XVI. The work was at one point damaged by water, though it was later restored.
The subject is likely to be inspired by the Grotta del Tuono in the Gulf of Naples. The Posillipo tunnel has also been suggested as a possible source of inspiration.