studies in Ultan Ghalasi area in the northwestern
province of Ardabil (ancient Artâvillâ) have
provided experts with evidence of Aras River
flooding two times during the Sasanid reign there.
Archaeologists studying Aras riverside now believe
that there have been two major floods caused by
Aras overflow in Ultan Ghalasi area.
Moghan Plain which houses the Ultan Ghalasi
fortress and more than 55 historical sites in its
vicinities is considered one of the key sites of
Ardabil province. Evidence dating back to the
Prehistoric, Sasanid, and Islamic era is so far
The time span between the two floods is not yet
known, but it seems that the second flood which
has been greater has been a main cause of the
destruction of the Sasanid city of Ultan Ghalasi.
According to head of the archaeology team
surveying the area, Karim Alizadeh, the sediments
remaining from the first flood are 60 cm thick and
those remaining from the second one 80 cm. The
amount of the sediments which include riverbed
rocks, stones, and sand is evidence of the
“What backs up the hypothesis of the Sasanid
city being destroyed due to the second flood is
the time coincidence of the city ruins and those
of the second floods,” explained Alizadeh,
adding that during the stratigraphy work, remains
of the Sasanid city were found no further than the
layers from the floods.
Historical evidence dating to the Sasanid and
Islamic times has been discovered in Ultan Ghalasi
area. The Islamic city there has been constructed
over layers of flood sediments and ruins of the