Name the season in which South African berg winds develop​

Winter Season

Explanation:

These high temperatures are accompanied by the phenomenon of Berg winds-hot, dry winds blowing from the direction of the interior. These Berg winds occur mainly from April to September and are most frequent on the west coast of South Africa, where they occur approximately fifty times a year, Therefore winter.

a characteristic is a deep cut in the earth or left over rock aka till.  

heat from the core of the earth causes convection currents to occur in the mantle. these currents slowly move the crust around.