rockwork

A natural mass or pile of rocks.

Stonework imitating the irregular surface of natural rock.

Stones fixed in mortar in imitation of the irregular surface of natural rocks, and arranged to form a mound, or constructed as a wall.

A rockery; a design formed of fragments of rocks or large stones in gardens or pleasure-grounds: often forming a kind of grotto.

A natural wall or mass of rock.

Rock-faced or quarry-faced masonry. See quarry-faced (with cut).

Stonework in which the surface is left broken and rough.

A rockery.

Ornamental work done with rocks, as for example around a pond.