The site of FLK North has the oldest known evidence of Elephant consumption , attributed to Homo ergaster around 1.8 million years ago .
The site of Frida Leakey Korongo North ( commonly known as FLK North and named after Louis Leakey 's first wife ) bears the distinction of having the oldest known evidence of Elephant consumption , attributed to Homo ergaster around 1.8 million years ago .