
From Sera Lake to Kadıralak, the Lake, Plateau and Cave of Western Trabzon
Sign in to like and rate
Seen from the coast, western Trabzon looks like a wall of green slopes. Yet behind that wall lies a mountain country that climbs to more than one and a half thousand metres above sea level: a lake born of a landslide, a plateau standing above a sea of clouds, a cave carved over millions of years and a meadow that turns purple with flowers every spring. This route links those four places in a single day and, on the road that runs from Akçaabat to Düzköy and from there to Tonya, shows up close what kind of land the Black Sea mountains really are.
The day begins in the Sera Stream valley in Akçaabat. Sera Lake formed in February 1950 when rocks broke away from the valley slope and blocked the stream; so the first stop of this route is a lesson in how restless soil and water are here. After a walk along the lakeshore you take the road between Akçaabat and Düzköy. According to the directions of the Provincial Directorate of Culture and Tourism, you turn west at the twelfth kilometre of this road and, after about ten kilometres, reach Hıdırnebi Plateau. The viewing terrace on its rocky hill looks out over the Black Sea in clear weather and, on cloudy days, over a sea of cloud spread out beneath your feet.
From the plateau you drop back down to the Düzköy road and turn off to Çalköy before entering the district town. Çal Cave is a long corridor opened by an underground stream flowing inside the limestone; of the eight kilometres that have been measured, about one kilometre can be visited on lit walkways. The day ends at Kadıralak Nature Park, right beside the town of Tonya, on a plateau meadow ringed by spruce forest.
The order follows the geography: you climb from the coast into the mountains, then cross through the mountains westward to Tonya. But each stop shows a different natural process. At Sera it is the landslide, at Hıdırnebi altitude and fog, at Çal underground water, and at Kadıralak the plant cover of the high pasture. So by the end of the day you will have seen that Trabzon is not only sea and tea but a mountain landscape built up layer upon layer.
The practical notes matter. The plateau roads are narrow and winding, and fog can fall in an instant; keep your headlights on and drive without hurrying. The inside of the cave is cooler and damper than the outside, so take a jacket and shoes that do not slip. According to official sources the roads to Hıdırnebi are open in summer and winter, but the road to Kadıralak is reported to close with snow in winter and early spring; ask about road conditions before you set out. Check current visiting conditions, fees and opening times for the cave and the nature park with the official bodies. If you are at Kadıralak in the flowering season, stay off the meadow and take your photographs from the path.
Sources
- T.C. Kültür ve Turizm Bakanlığı, Trabzon İl Kültür ve Turizm Müdürlüğü, Göller ve Mağaralar, https://trabzon.ktb.gov.tr/TR-57703/goller-ve-magaralar.html
- T.C. Kültür ve Turizm Bakanlığı, Trabzon İl Kültür ve Turizm Müdürlüğü, Yayla Turizmi ve Yaylalarımız, https://trabzon.ktb.gov.tr/TR-57698/yayla-turizmi-ve-yaylalarimiz.html
- T.C. Kültür ve Turizm Bakanlığı, Trabzon İl Kültür ve Turizm Müdürlüğü, Çal Mağarası, https://trabzon.ktb.gov.tr/TR-57785/cal-magarasi.html
- Doğu Karadeniz Kültür Envanteri, Sera Gölü Tabiat Parkı, https://karadeniz.gov.tr/sera-golu/
- Doğu Karadeniz Kültür Envanteri, Çal Mağarası, https://karadeniz.gov.tr/cal-magarasi/
- Anadolu Ajansı, Trabzon'daki Çal Mağarası turistlerin Karadeniz rotasında ilk sıralarda, https://www.aa.com.tr/tr/kultur/trabzondaki-cal-magarasi-turistlerin-karadeniz-rotasinda-ilk-siralarda/3228131
- Gazete Birlik, Trabzon'da yer altı turizminin gözdesi Çal Mağarası, https://www.gazetebirlik.com/kultur-sanat/trabzonda-yer-alti-turizminin-gozdesi-cal-magarasi/923003
- Habertürk, Zirvedeki doğa harikası Hıdırnebi Yaylası, https://www.haberturk.com/trabzon-haberleri/70038412-zirvedeki-doga-harikasi-hidirnebi-yaylasi
- İstiklal, Hıdırnebi Yaylası'nda güz zamanı, https://www.istiklal.com.tr/foto-galeri/hidirnebi-yaylasinda-guz-zamani-927352h
- CNN Türk, Kadıralak Yaylası bu yıl erken mora büründü, https://www.cnnturk.com/yasam/kadiralak-yaylasi-bu-yil-erken-mora-burundu-769266
- TGRT Haber, Mor Yayla bu sefer sarıya büründü, https://www.tgrthaber.com/yasam/mor-yayla-bu-sefer-sariya-burundu-2647693
- Küre Ansiklopedi, Kadıralak Yaylası, https://kureansiklopedi.com/tr/detay/kadiralak-yaylasi-f79a1
- Küre Ansiklopedi, Sera Gölü, https://kureansiklopedi.com/tr/detay/sera-golu-38ce6
- Wikipedia, Sera Gölü, https://tr.wikipedia.org/wiki/Sera_Gölü
- Wikipedia, Çal Mağarası, https://tr.wikipedia.org/wiki/Çal_Mağarası
- Wikipedia, Kadıralak Tabiat Parkı, https://tr.wikipedia.org/wiki/Kadıralak_Tabiat_Parkı
Route Stops

Sera Lake.
Come to Sera Lake early in the morning, because the lake shows its best face in the hours before the wind has broken the surface. As the Black Sea Cultural Inventory also stresses, the real charm of this lake is the reflection of the surrounding trees falling on the still water. After leaving your car, first stand on the shore and look at the two slopes of the valley. That view matters for understanding the event that created the lake. According to the sources, in February 1950, after heavy rains, huge masses of rock broke away from the slopes of the Derecik Valley, blocked the valley floor and cut off the Sera Stream. According to the figures given by Wikipedia, the mass that broke away was about fifteen million cubic metres and the lake reached its full form in eighteen days. The date differs by a day between sources; the Provincial Directorate of Culture and Tourism gives 20 February, while other sources give 21 February. It is said that the traces of the collapse can still be made out on the slopes today; looking for the steep, bare walls is a good place to start. The lake takes its name from Sera, the old name of the town of Yıldızlı within whose boundaries it lies. Follow the walking path along the shore and head deeper into the valley. When the lake first formed it was about four kilometres long, but as the dam eroded over time the water surface shrank. Today its width varies between one hundred and fifty and two hundred metres according to the Provincial Directorate of Culture and Tourism. As you walk, notice the colour of the water and the deposits along the shore, because since the great landslides of 1990 soil carried down by the stream has been slowly filling the lake. For this reason do not go into the water from the shore; Wikipedia writes that the soil accumulated on the lake bed has made it hard for those who fell in to get out and has cost lives. Carp, barbel and brook fish live in the lake, and freshwater crayfish released later have multiplied. The area was declared a natural protected site in 2005 and a nature park in 2010. According to Wikipedia, there is a small hydroelectric plant about three hundred metres below the lake's outlet. Day use, nature walks and cycling tours are possible inside the nature park. The best angle for photographs is where the reflection meets the wooded slope at the narrow end of the lake. On a misty morning the upper part of the valley stays inside the cloud and the lake takes on an even more enclosed mood. Sit on a bench by the shore and take a short break, because the road from here on will climb steadily. Remember that the road around the lake can be narrow and busy; mind the edge of the road as you walk. On leaving, take the Düzköy road instead of heading down towards Akçaabat and follow the signs for Hıdırnebi.
Source: KTB Trabzon, Göller ve Mağaralar; Karadeniz Kültür Envanteri; Wikipedia.

Hıdırnebi Highland.
Come to Hıdırnebi by the directions of the Provincial Directorate of Culture and Tourism: turn west at the twelfth kilometre of the road between Akçaabat and Düzköy and climb for about ten kilometres up to the plateau. Official sources state that this road is open to traffic in summer and winter, but still drive slowly on foggy days. As you climb you will see the forest change and the valleys fall away below. The altitude of the plateau is given differently in the sources; Wikipedia and information relayed from Akçaabat speak of one thousand six hundred metres, while the Provincial Directorate of Culture and Tourism gives a higher figure. Whichever figure you take, when you get out of the car you will feel that the air is clearly cooler than on the coast. First take a short walk among the plateau houses. A large share of the wooden houses here were built in keeping with the architecture of the region under the Plateau Town project that started in 1998. The Provincial Directorate of Culture and Tourism writes that this plateau town was set up as a pioneering example that sits well with nature. Then climb Hıdırnebi Hill, because in the words shared by the sources the hill is like a natural viewing terrace. In clear weather you can see Akçaabat, the surrounding villages and the blue of the Black Sea from here. On cloudy days the view turns upside down and the clouds stretch below, beneath your feet, like a sea. If you want to see the sea of clouds, watch for mornings when a mild day meets low cloud. The wind can be strong on the hilltop, so bring a windbreaker with you. Also stop at the flat ground where the plateau festivals are held; local people call this area Dernek Çimeni or Argolos Çimeni. According to information relayed from Akçaabat, the festival begins in mid July every year and ends on 20 July, and the events of the last day are known as Orak Yedisi. During the festival a market of tents is set up, and horon circles form to the kemençe and the drum and shawm. If you come in July the area will be very crowded, so leave your car where the attendants direct you. Those who come in autumn find, as AA reported, yellow and red leaves on the lower slopes and fog on the hilltops. The Provincial Directorate of Culture and Tourism also notes that wild animals such as wolf, fox and jackal can be observed in the forest. If you want to see the animals, wait quietly at the edge of the forest and do not feed them. The Provincial Directorate of Culture and Tourism writes that the infrastructure on the plateau is complete and that guesthouse-style homes offer accommodation. Kuruçam Plateau, about one kilometre away, is a neighbouring plateau reached by the same road. After spending an hour and a half here, go back down the same road to the Düzköy road and continue towards the district town.
Source: KTB Trabzon, Yayla Turizmi ve Yaylalarımız; Habertürk/İHA; AA.

Çal Cave.
Come to Çal Cave by the road described by the Provincial Directorate of Culture and Tourism: take the road that turns off to the right before you enter the district of Düzköy and reach the cave by driving through Çalköy. The cave entrance is on the Kulaklık Stream, right at the start of the road that runs from Çalköy to Çayırbağı. After leaving the car, look up before going in, because there is a historic castle on the hill above the cave. Take a jacket with you at the entrance and put your phone in your pocket; inside it is cooler and damper than outside. Çal Cave is essentially an underground water channel, and a small stream flows through it. According to AA, the depth of this stream rises to one and a half metres in rainy periods and drops to as little as twenty five centimetres in summer. So if you come in spring, the sound and flow of the water will be much stronger. After the entrance you walk along a single corridor for the first two hundred metres; notice how the height of the ceiling keeps changing. According to the Provincial Directorate of Culture and Tourism, stalactites and stalagmites begin to appear after the first one hundred and fifty metres. At about two hundred metres the corridor divides in two, and we suggest you take the right branch first. The visitable part of the right branch is about four hundred metres long, and around its sixtieth metre there is a small lake and a cascade. Stand in front of the cascade and listen to the water striking the rock; this is one of the most striking points in the cave. Then return to the fork and go into the left branch, which is about one hundred and fifty metres long. In the chamber at the end of this branch there is a shaft down which water from a sinkhole on the surface flows. AA also reports that in this section there are oval, water-filled hollows formed by dissolution and collapse in the limestone ground. Because the cave has openings to the outside through sinkholes you feel a light current of air, and that is why the sources say it feels like walking in a valley rather than underground. Wikipedia writes that the cave formed in two stages over about eight million years, first through seeping water dissolving the limestone and then through the uplift of the region. Explorers have so far reached as far as eight kilometres, but the section visitors can walk is limited to about one kilometre. Do not leave the wooden and metal walkways, do not touch the formations and use the flash sparingly. Wet platforms can be slippery, so keep hold of the handrail as you walk. The cave opened to tourism in 2003 and its visitor numbers have grown fast in recent years; according to information from Düzköy, more than one hundred and seventy eight thousand people came in 2025. If you want to avoid the crowds, choose weekdays and the morning hours. On the way out take a brief look at the castle, then return to Düzköy and cross over towards Tonya.
Source: KTB Trabzon, Çal Mağarası; AA; Wikipedia.

Kadıralak Nature Park.
The last stop of the day is Kadıralak Nature Park, right beside the town of Tonya. According to Wikipedia the park lies about two kilometres from the centre of Tonya, at an altitude of one thousand four hundred and eighty metres, next to the Kadıralak Plateau that bears the same name. In news reports different figures appear for the plateau itself, such as one thousand three hundred metres and nine kilometres from the district town; the two names describe different parts of the same area. The park covers an area of about three thousand five hundred decares and is recorded as Türkiye's two hundred and twenty third nature park. Wikipedia notes that qualified and sustainable protection zones lie to the east of the park; in other words, the surrounding meadows are also part of a protected whole. After leaving your car, first walk to the edge of the meadow and take in the view as a whole. The plateau is ringed by spruce, fir and Scots pine forest, and in the middle of the meadow stand wooden plateau houses built on stone foundations. What makes Kadıralak famous is the blue star flowers that open in spring; this plant, whose scientific name is Scilla bifolia, paints the meadow purple. That is why local people also call the plateau Mor Yayla, the Purple Plateau. According to news reports the flowers mostly open in April and can be seen for about two weeks. But the flowering time changes with the winter; it has been reported that after a harsh winter the flowers opened late, and in a mild year they opened before April arrived. The blue star is among the plants that Türkiye is obliged to protect under the Bern Convention. According to a TGRT report, one year visitors stepping on the flowers while taking photographs caused the carpet to disappear within a short time. So in the flowering season do not walk onto the meadow, stay on the paths and take your photographs from the track. After the blue flowers fade, yellow flowers open on the plateau, and it is written that the same place is then called the Yellow Plateau. In early summer you can take a short walk along the forest tracks at the edge of the meadow and find a quiet corner for watching birds and plants. Küre Encyclopedia writes that no large-scale festival is held on the plateau, so this is a much quieter place than Hıdırnebi. In autumn the area takes on a completely different look with yellowed leaves and thick fog. Küre Encyclopedia states that there is no accommodation on the plateau and that options for food and drink are limited, so bring your water and snacks with you. The same source also notes that the phone signal can be weak in some parts; download your map in advance. Because snow can close the roads in winter and early spring, ask about road conditions in Tonya before setting out. Take your rubbish back with you and do not enter the gardens of the plateau houses, because some of them are still in use. After ending the day here you can return to Trabzon by the road that goes down through Tonya to the Black Sea coast.
Source: Wikipedia; CNN Türk; TGRT Haber; Küre Ansiklopedi.
