By clicking the mouse on the various periods (AD) you
can see the development in time of the 100 tombs described in
this presentation. Only the tombs that are nowadays visible are
shown. Remember, however, that many apparently empty spots initially
were occupied by older graves. Those graves are or were situated
below the still existing tombs. They are, as far as they are known,
mentioned in the description of the 100 tombs. Many of the older
tombs probably got lost in the mists of time.