In 1882, on the high right bank of the Limnytsia River, L. Lavretsky and I. Sharanevych discovered the foundation of a mysterious small ancient structure. Yu. Zakhariyevych, after measurements, interpreted the monument’s plan as a polygon with a rounded eastern part, which was named Polygon or Rotunda. The plan drawn by Yu. Zakhariyevych became not so much a document showing the true state of the discovered ruins, but rather an attempt to reconstruct an incomprehensible structure, thereby further misleading subsequent researchers. This circumstance was already noted by J. Pelensky, who refused any attempts to interpret the monument. M. M. Voronin also considered the Polygon to be a structure of undetermined affiliation.

Ya. Pasternak, referring to the fact that glazed tiles and human burials were found during the Polygon excavations, indicated that this points “rather to a chapel than to a defensive tower.”

Already in the early 1950s, when an expedition led by M. K. Karger worked in Halych, the location of the Polygon was lost. During the reconnaissance conducted in 1978 by an expedition led by O. M. Ioannisyan, the location of the lost structure was successfully rediscovered, and in 1979, the “Polygon” was re-opened by the Halych detachment of the Architectural and Archaeological Expedition of the LOIA AS USSR.

The finds from O. Ioannisyan’s excavations were taken to Leningrad for processing.