A squared doorway, from five to six feet in height, gives entrance to the tombs at one end, and has for ornament a fourfold fillet, which surrounds it on three sides.
Otherwise, ornamentation is absent, the stonework of both walls and roofs being absolutely plain and bare.

Internally the chambers present the same naked appearance, walls and roofs being equally plain, and the floor paved with oblong slabs of stone, about a foot and a half in length.
The grouped chambers are of several kinds.

Sometimes there are two chambers only, one opening directly into the other, and not always similarly roofed.

Occasionally, groups of three are found, and there are examples of groups of four.

In these instances, the exact symmetry is remarkable.