Kozyatağı is an underground transfer station for the M4 line and the M8 line of the Istanbul Metro. Located under beneath the D.100 state highway in Kozyatağı, it was opened on 17 August 2012 for the M4 and on 6 January 2023 for the M8 line.The transfer tunnel between the two stations is under construction.
For now, the interchange between two lines made via ground level.
Wikipedia https://en.wikipedia.org/wiki/Kozyatağı_(Istanbul_Metro)
Coordinates 40°58'31.404" N 29°5'58.832" E
