The hazel at Karageyikli is recorded by the directorate as an estimated 1,030 years old, a remarkable figure for a hazel. It stands near Karageyikli village in Mihalıççık district of Eskişehir province, and was registered as a natural monument on 23 May 2001 on 0.10 hectares.

The tree is nine metres tall. Its health is recorded as sound and its general appearance as well-formed, on upper-slope ground under the inner Anatolian climate. It is a Turkish hazel, Corylus colurna.

Capacity is 10 visitors and one vehicle.

Minibuses run from Eskişehir through Mihalıççık to Karageyikli village, a distance of 107 kilometres.

Designated
6.05.2003Checked: September 13, 2026

Visiting hours

Visiting hours
08:00 - 18:00Checked: September 16, 2026

When to go

Climate
Across Eskişehir as a whole, monthly mean temperatures run from 0.2 °C in January to 22.1 °C in August; the mean stays between 15 and 25 °C in June, July, August and September; rainfall is heaviest in April (44 mm) and lightest in August (11 mm). Long-term means for 1991-2025 from the Turkish State Meteorological Service (MGM).Checked: September 22, 2026