Boatle Mankgodi road sitting on fault line

Upon noticing  the abnormal longitudinal cracks on the Boatle-Mmakgodi road the Ministry of Transport engaged the University of Botswana Physics Department to carry out a detailed study on seismic reflection, refraction and ground penetrating radar imaging (GPR) of the road base at km 17. The research findings showed serious disruption to the road bed and that surface cracks persist to a depth of at least 5m. It also profiled a seismic refraction of a deeply weathered section to a depth of 20m. It was evident that the road is literally sitting on what could be termed a fault line, resulting in exposure of the underlying road material to ingression [entering] of water and further weathering the material.