  This article describes the study of a Bronze Age limestone slab with cup
marks, discovered during the archaeological excavations of kurgan 1 of the
kurgan grave field Prolom II, located in the Belogorsk region in Crimea.
According to the results of the study, it is concluded that the Belogorsk slab
is a sundial of about the XV - XII centuries BC and belongs to the Srubnaya
culture. By type of sundial, it is closest to the analemmatic sundial. However,
the principle of the hourly markings of the Belogorsk slab is so unique that it
is proposed to separate this type of sundial into a new type - inverted
analemmatic sundial. This type is characterized by the fact that, unlike
typical analemmatic sundials, the gnomon remains motionless throughout the
year, and in accordance with the analemma, the "dial" "moves" - an ellipse of
hour markers from cup marks, i.e. gnomon and hour markers (cup marks) change
places in terms of mobility. The movement of hour markers on the Belogorsk slab
is not literal, but is imitated by several rows of cup marks, which are
fragments of hour marker ellipses for different months of the year. The idea
behind this type of sundial is so revolutionary that we can talk about the
discovery of a completely new type of sundial, the analogue of which has not
yet been discovered. Keywords: cup marks, sundial, inverted, analemma, true
solar time, mean solar time, hour markers, Srubnaya culture, Bronze Age, kurgan
grave field, slab.
