The Cornevache dolmen is located northwest of Selommes in the Loir-et-Cher department in France.
The Cornevache dolmen is an east-west oriented portal dolmen. It has a square chamber with sides measuring 2.0 meters, covered by a sub-trapezoidal capstone (2.2 meters by 2.0 meters). The chamber is delimited by an endstone and two orthostats on the south and north sides each. The entrance to the chamber is on the east side. In front of it, there is a damaged portico, of which only two supporting stones remain.
