This is the first town on the territory of future Ulan-Ude and it is connected to the nomad Hunnu tribes. The Hunnu empire, which was formed in Mongolia and Northern China during 400-300 BC, lasted for 300 years. There are many archeological Hunnu monuments in Buryatia, including burial grounds, the remains of villages and temporary stops. Ivolginsk hillfort is one of them. It was opened in 1927, but the excavations are performed to this day. The remains of blacksmith workshops and smelteries were discovered here. Some of these artifacts are now stored in the Ethnographic Museum of Transbaikal Peoples in Ulan-Ude.