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The historical Benedictine Abbey, which comes from the 12th century, consists of a basilica, monastery buildings and underground cellars. The underground of abbey, which is commonly unavailable for tourists, is not only historically valuable exhibit but also reveals condition of the foundations of the buildings, which has been built on a limestone hill above the River Vistula. In order to obtain spatial information of the underground of the abbey, scientists have made laser scanning of cellars and corridors under the basilica and monastery. Restricted conditions of references TLS data and complicated geometry of control points network made registration of the point clouds difficult. The article presents the methodology of planning, measurement and verification of 3D scanning procedures of underworld abbey. The procedure of measurement of the historical object excluded possible to install permanent reference …