Petroglyphs, Rock Art. The rock carvings have been painted red to make them more visible.

Pictures, rock art, from Vitlycke, Aspeberget, Fossum and Jörlov - Massleberg, Sweden.
Rock carvings from bronze age.

Rock Art
Rock art is a term in archaeology for man-made markings made on stone.

They can be divided into:
a. Rock Carvings, petroglyphs - carvings into stone surfaces
b. Pictographs - rock and cave paintings

Rock Carvings are created by rock removal, including pecking, scratching, abrading, carving, drilling and sculpting.
Sometimes rock carvings (petroglyphs) are painted or heighten by polishing.
Some of the most ancient rock carvings (petroglyphs) are the same colour as the surrounding rock.
The rock art, carvings, in Tanum, Vitlycke and Fossum, have been painted red to make them more visible for tourists.

Rock or Cave paintings are paintings on cave or rock walls and ceilings, dating to prehistoric times.
The earliest known rock paintings are dated to the Paleolithic, about 40,000 years ago. The earliest European cave paintings are dated to about 32,000 years ago.
They are often in areas of caves that aren't easily accessed.

Creswell Crags
Creswell Crags is a limestone gorge in the North East of the County of Derbyshire in England.
The cliffs of the ravine contain several caves that were occupied during the last ice age, around 43,000 and 10,000 years ago.

In April 2003, engravings and bas-reliefs were found on the ceilings and walls of some of the caves; it had previously been thought that no British cave art existed.
The finds at Creswell Crags represent the only known examples of Palaeolithic cave art in Britain, the most northerly finds in Europe and one of the most extensive collection of prehistoric bas-reliefs in the world.
Their subject matter includes representations of animals, bison and different bird species.
► Creswell Crags, Wikipedia