Found this in the city of Tbilisi, Georgia. It was discovered while digging a foundation, under 6 feet of ground. I also found a smaller version of the pictured one, only 1/2 this size. That one was found in kobuleti, Georgia. Also found aproximately 6 feet underground. Both have a prolate spheroid shape.
Could not find any flat areas on the surface.
Size: 14" ×16"
Weight: 38.8 pounds.