Among the many stone tumuli bursting on the hills of the Boka Bay, two have always attracted special attention - Mala and Velika Gruda near Radanovici village in the area of Grbalj.
Archaeological research of Mala Gruda was carried out during 1970 and 1971. Its height in the center is about 4 meters, and the diameter is about 20 meters. Studies have shown that the burial on Mala Gruda was performed at the end of the 3rd and the beginning of the 2nd millennium BC.
In the central tomb, a fragmented shallow conical bowl and a beaker with one handle were found. Small-grain ceramics show all the features of the Vučedol ceramics with a specific engraved ornamentation.
From the metallic finds, the beauty of the fabric and the material from which they are made are distinguished by the golden ritual knife, the silver ritual ax with golden applicability, and five gold pendants that can be placed, based on analogy, in the Cretaceous-Mycenaean culture. These exhibits were presented to the European public at the largest exhibition of prehistoric objects in Europe, "War-archeological traces", which was organized in the National Museum of Prehistoric in Hale, Germany in November 2015.
Tumulus Velika Gruda lies south of the tumulus of Mala Gruda. This tumulus has the largest diameter of 26 m and its peak rises 6.30 m above the surrounding terrain. Velika Gruda is actually a double tumulus and consists of clay pits 4.50m tall over which a second boulder was made of stone pebbles from a nearby stream, 1.80m tall in the center.
Archaeological research of the tumulus of Velika Gruda was carried out during three years, 1988, 1989 and 1990. As early as the first year of research, it was discovered that the stone clay was, in fact, a post-necropolis for a multilayer burial. The disturbed graves and scattered remains at the very tip of the chalice belonged to the Early Iron Age, while the graves in the deeper layer of stone chalices belonged to the last phase of the Bronze Age.
At the very bottom of Velika Gruda, a central two-ply gravestone plate was discovered without cover. The upper grave had only a few bronze artifacts, while a skeleton of the deceased on the left side was found in the lower grave, behind which there was a ceremonial shrub of ceramics with engraved and white encrusted ornaments of Vučedol culture. In front of the deceased face, there were two bronze blades and a narrow bronze ax, and underneath the pendulum, a total of eight chariots of self-made gold, three of which belong to Mala Gruda or the Cretaceous-Mycenaean culture, while the other five can be linked to finds from the Greek island of Lefkada from the Ionian archipelago.