; French for "low relief", derived from the Italian basso rilievo
) or low relief
is a sculpture
which is not free-standing or in the round, but has a background from which the main elements of the composition project. Bas-relief is very suitable for scenes with many figures and other elements such as a landscape or architectural background. A bas-relief may use any medium or technique of sculpture, but stone carving
and metal casting
are the traditional ones. If more than 50% of most rounded or cylindrical elements such as heads and legs project from the background, a sculpture is usually considered to be "alto rilievo
" or "high relief", although the degree of relief within both types may vary across a composition, with prominent features such as faces in higher relief.