placesandpalaces:In 1965, excavations in Mezhyrich, Ukraine, revealed the presence of 4 huts, made
placesandpalaces: In 1965, excavations in Mezhyrich, Ukraine, revealed the presence of 4 huts, made up of a total of 149 mammoth bones. These dwellings, which are about 15,000 years old, are some of the oldest shelters known to have been constructed by pre-historic man. -- source link