The investigations of the Celtic sanctuary in Sboryanovo in 2017 were undertaken in the framework of the project “Sboryanovo – necropolises and territories” of NAIM and the University of Geneva. The southern part of the sanctuary – a complex of pits surrounded by ditches with a trapezoidal surface of 840m2 – was investigated with five trenches meant to document the southern ditch (Fig. 1). The western and eastern corners were localized, as well as the main entrance (Fig. 2). The ditch, at present 6–10 m wide at the top and 1.90–2.20 m at the bottom, and 1–1.20 m deep, originally had vertical walls. The entrance in the middle of the southern ditch is 5 m wide. A series of postholes probably belong to a wooden fence and a gate. The discovery of another ditch parallel to the western wall of the sanctuary suggests it developed to the west. Fragments of handmade and wheelmade pottery, imported amphorae, and unidentified iron objects were found in the ditch (Fig. 3). The date of the sanctuary remains unchanged – c. 200 BC.