TY JOUR TI EXPERIENCE IN THE STUDY OF THE ARCHITECTURAL ASPECT OF CAVE DIGGING IN THE PRIDNESTROVIE AND PRIOSKOLYE KW cave digging KW cave monasteries KW architecture KW underground space KW research JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Vovzhenyak, P.Y. PY 2025 IS 10 PB Belgorod State Technological University named after V.G. Shukhov