Göynüş Vadisi, located in the area known as the Phrygian Valley, is a long and narrow valley surrounded by high cliffs of volcanic tuff. The old name of the valley - Köhnüş - derives from the Turkish word köhnemiş, which means the area damaged by weather conditions.
The valley lies at the foot of Mount Türkmen, from the south is restricted by Aslankayalar rocks, from the west - by Türkmen formations, and from the north- Yokhalil outcrop. In the center of the valley rises the hill where there are the ruins of fortress Köhnüş fortress. In Göynüş Valley there are numerous traces left by the Phrygian civilization. Among them, the most impressive are two rock monuments, now called Aslantaş and Yılantaş.
The area of Göynüş Valley was first examined by a Scottish archaeologist William Mitchell Ramsay in the years 1884-1887. He identified two monumental tombs and another Phrygian monument called Maltaş.
In the mid-twentieth century a Dutch archaeologist, Caroline Henriette Emilie Haspels, conducted another survey of the valley and found many more Phrygian rock monuments, carved in hard to reach areas of Aslankayalar and Akkuş Yuvası massifs. In 1995-1996, two Turkish archaeologists - Taciser Tüfekçi Sivas and Hakan Sivas - discovered two altars of rock, located in Boncuklu Inler Mevkii and near the Maltaş monument.
To recapitulate, in Göynüş Valley there is a large number of Phrygian monuments, including 40 tombs, forming the largest Phrygian necropolis known to researchers so far. Additionally, in the valley, one can find rock tombs from the Roman period, and Byzantine churches and chapels carved into the rocks. The oldest Phrygian monuments of Göynüş Valley date back to the period from the eighth to the sixth century BC.
Two of the most fascinating Phrygian tombs are located just off the road crossing the valley. The first one is called Aslantaş or i.e. the Lions' Rock. This monument was carved in the northern vertical wall of a cubic rock, about 11 meters high. The façade of the tomb is decorated with reliefs of two mighty lions. The animals are depicted standing upright on their hind legs, as if preparing to jump. Their jaws are open, solidified in a silent roar.
Between the silhouettes of the standing lions, there is a square entrance to the tomb. The chamber of this tomb was carved on a rectangular plan and is decorated in a sophisticated way. Below, at the feet of the roaring lions, there are much worse preserved reliefs depicting another two lions in a sitting position.
The second great Phrygian tomb is known locally as Yılantaş or the Snakes' Rock. In fact, the monument does not depict any snakes, but lions, and the researchers describe it as Kırık Aslantaş (i.e. the Broken Lions' Rock). The misunderstanding as to the name and the original appearance of the monument is due to its poor condition. Its original façade had been split and then broke up into pieces, spread out on the ground, most likely as a result of an earthquake.
Göynüş Valley is located approximately 1.5 km to the west of D665 road that connects Afyon and Eskişehir. Administratively the area belongs to Kayıhan village of Ihsaniye district.
By public transport: Kayıhan village can be reached by a minibus from Afyon. There are no public transport options for the remaining 6 km that separate Kayıhan village and Göynüş Valley. Therefore, it is necessary to hike or take a taxi to reach the valley.
By car: Exit D665 road at the crossroads situated 34 km north of Afyon and 103 km south of Eskişehir. If you drive from Afyon, remember to make a stopover at nearby Ayazini (6 km southeast of Göynüş Valley), where there is an ancient necropolis and a magnificent Byzantine church carved into the rocks.