Bulgarian archaeologists have found one more prehistoric clay slab with possibly pre-alphabetic writing or proto-writing carvings, this time in a large 7,000-year-old settlement near Panagyurishte in South Central Bulgaria, which is from the transition period between the Late Neolithic (New … Continue reading Yet Another 7,000-Year-Old Slab with Likely Proto-Writing Found in Bulgaria, in Transitional Stone-to-Copper Age Settlement