The name of the city and its dominant acropolis, Armaz-Tsikhe (literally, citadel of Armazi; არმაზციხე), is usually taken to derive from Armazi, the chief deity of the pagan Iberian pantheon. The name first appears in the early medieval Georgian annals though it is clearly much older and reflected in the Classical name Armastica or Harmozica of Strabo, Pliny, Ptolemy and Dio Cassius. According to a collection of medieval Georgian chronicles, Armaztsikhe was founded, in the 3rd century BC, by king Pharnavaz I of Iberia at the place hitherto known as Kartli. This fortress stood on the modern-day Mount Bagineti, on the right bank of the Mtkvari River (Kura), at its confluence with the Aragvi. The other citadel, Tsitsamuri (წიწამური) or Sevsamora of the Classical authors, stood just opposite, on the left bank of the Aragvi and controlled the road towards Mount Kazbek.