Tomb IGN3 is carved into the southwestern slope of the massif in sector I of the AlMahjar necropolis, facing east. The tomb features a facade with a row of crowsteps, with the vertical development halted by a horizontal plane 4-5 meters from the ground. The facade is recessed about 10 cm into the massif. The lateral cleaning trenches are shallow, with the left one nearly level with the pilaster. The facade is slightly tilted to the left, as indicated by the deeper right cleaning trench.
The crowsteps originally consisted of two lateral half-crowsteps and three central crowsteps. The cartouche, recessed by about 4-5 cm, contains three holes of unknown purpose. The upper decoration rests on two heavily eroded angular pilasters with pseudo-Doric capitals. The entrance, located about 1.6 meters above the ground, is wide and rectangular, framed by the pilasters without additional flat spaces, resembling a portal rather than a traditional facade.
The interior features a square burial chamber, slightly rotated to the left relative to the facade. The chamber has a high ceiling of about 2 meters, with the floor on the right side lowered by approximately 10 cm. There is one visible pit tomb, with evidence suggesting there may have been up to four originally, as indicated by a fragment near the burial niche. The pit tomb retains a raised edge to support a closure system. A hole with a diameter of 20 cm is present in the ceiling.