Noraduz cemetery is a medieval cemetery with many ancient khachkars in the village of Noraduz , Gegharkunik marz near Gavar and Lake Sevan , 90 km north of Yerevan . Noraduz cemetery is a medieval cemetery with a large number of early khachkars located in the village of Noratus , Gegharkunik marz near Gavar and Lake Sevan , 90 km north of Yerevan .