From May 27 until September 19, 2021, a temporary exhibition presents archaeological finds discovered during one of the largest rescue archeological excavations in recent years. 120 archeological sites have been studied for a period of 18 months (between March 2019 and October 2020). The sites fall within the 474 km route of the project for expansion of the gas transmission infrastructure in Northern Bulgaria. 

More than 400 finds from 60 archeological sites will be displayed at the exhibition, including ceramic vessels, tools and weapons, gold and silver jewelry, coins and statuettes dating back to different eras- from the early Neolithic (6000 BC) until the Renaissance (19th century). The exhibits will be displayed at the National Archaeological Museum in Sofia.