Ground-level photographs show an inner chamber, probably a tomb, and a construction technique of large limestone blocks.

This construction technique, with a low-quality core masonry, meant a considerable saving of labor at the time of the construction.

Around 1990 a new construction technique was invented: in-mould microshell.

Actually, the architect had experimented with a new construction technique so that the battered stone walls had concrete cores.

He was, in fact, built shortly after him and with the same construction technique.