Roman wall paintings from an imperial villa at Boscotrecase.
The first shows a landscape on a black background, and the second, supports with entablature also on a black background. Both are frescos and date to the last decade of the 1st century BCE.
The details of these frescos are a bit hard to see but definitely worth checking out (especially the second one). You can do this here for the first fresco, and here for the second.
Courtesy & currently located at the Metropolitan Museum of Art, New York, via their online collections. Accession Numbers: 20.192.10 & 20.192.5.