Old version of the 'Steep Descent Ahead' road sign in Botswana (1977-1993), but is now being replaced by File:SADC road sign W322.svg or File:SADC road sign TW322.svg.
This file was derived from: Singapore road sign - Warning - Steep descent.svg:
Singapore road sign - Warning - Steep descent.svg: Woodennature
derivative work: Fry1989