New Hittite capital In the early 13th century BC,
Muwatalli II moved the Hittite capital from
Hattusa to Tarhuntassa. The reasons for this move remain unclear. Official records postdating Muwatalli II's death state that he moved the capital as the result of an omen. Generally, archaeologists explain the move as a military strategy, in order to be closer to the Syrian region in preparation for battle with
Ramses II at
Kadesh. However, Itamar Singer has proposed instead that Muwatalli II moved the capital as part of a religious reform, attempting to elevate his personal god Pihassassi, the storm-god of lightning, to a more powerful position in Hittite religious observance. A third explanation is that at this point in time, Tarhuntassa was more centrally located within the network of overland and sea routes connecting the Hittite empire and beyond, making it an ideal capital for managing trade and communication throughout the territory. Muwatalli II's son
Mursili III later moved the capital back to Hattusa. After
Hattusili III deposed Mursili, the new king appointed Muwatalli's son
Kurunta as king in Tarhuntassa. The treaty mostly refers to the appointed king as Ulmi-Tessup; consequently, some scholars believe that Ulmi-Tessup and Kurunta are two different rulers of Tarhuntassa.
Kurunta of Tarhuntassa Tudhaliya IV re-ratified Kurunta as king in a
treaty inscribed in bronze. At this time, Kurunta was leading his forces to war with
Parha. This treaty, unlike previous treaties involving Tarhuntassa, calls to witness the Hittites' vassal kings of Mira and the
Seha River Land on the Aegean coast. This implies that Tarhuntassa's stature was now a matter of importance for all western Anatolia. Kurunta later claimed the title of Great King for himself. Whether or not this claim extended to the whole domain of Hatti, the court in Hattusa contested it (and buried the treaty).
Fall of the Hittite Empire Toward the end of the Hittite empire,
Suppiluliuma II recorded in a
Hieroglyphic Luwian inscription that Hatti had attacked and sacked the city of Tarhuntassa. ==Türkmen-Karahöyük==