Today just impala exceed 100 000. I guess we have to go back way past 1925 to find a greater variety of game than we have today. Around 1870 you had the "gold rush" in the lowveld and hunting for the pot was rife.
The first organized expeditions to cross the lowveld were those led by Hans van rensburg and Louis Trichardt circa 1836
My guess would be around 1820/30
