Any research work on old buildings that are cultural heritage sites begins with the installation of exploratory pits, which allow the condition of underground structures to be assessed. Sometimes the pits reach a depth of several meters. For example, during research on the Hermitage Theater building in St. Petersburg, the pits reached a depth of 7 meters, which required the installation of temporary protective structures to prevent the soil from crumbling.

During the study of one of the tower complexes in Ingushetia (pictured), the depth of the pits reached almost 5 meters. If anyone still believes that the work of ACM Group is exclusively office work, so to speak, “white-collar work,” then they are deeply mistaken, not understanding how much effort it takes in all weather conditions to correctly determine and place pits that most fully reveal the historical structures of an object hidden by the earth.