In brief
The ten female figures in the central chamber are not an independent sculptural group. They participate in the architectural decoration of the tomb.
Useful to know
The Sveshtari tomb is a Thracian monument from the third century BC, discovered in 1982. UNESCO highlights the ten female figures in high relief on the walls of the central chamber and the painted decoration in the vault. [1]
The figures are described as caryatids with human and plant features. For the reader, this is a specific key: look at the relationship between the relief, the wall and the top of the space, instead of isolating each figure as a museum statue.
When viewing a general interior shot, first find the rhythm of the figures. Then trace where the relief ends and the painted scene begins. You don't have to come up with a design function for each decorative element just because it resembles a strut.
Date, number and location are different types of information. Preserving them separately helps the material to explain the monument without turning the archaeological interpretation into security where the source does not give it.
Sources
For further detail and to check the information: