For the last module of the TBI Origins Field School, Archaeology of the Turkana Basin, we headed to the west side of the lake. On this side, the students will be living at the TBI Turkwel Research Facility which is set up very similar to Ileret. However, we are now not too far from world famous archaeological sites of Kokiselei, Lokalalei, and Lomekwi, which the students will get the opportunity to visit! This module will be led by Dr. Sonia Harmand, Archaeology professor from Stony Brook University and co-director of the West Turkana Archaeological Project. Dr. Harmand has been working in the Turkana Basin for many years and has contributed greatly to our understanding of the earliest stone tools from East Africa. In 2015, Dr. Harmand and her team published in Nature their most recent discovery of the earliest known stone tool technology at Lomekwi 3, dating to 3.3 Ma. This discovery has been ground-breaking, making the oldest stone tools 600,000 years older than we originally thought and broadening our understanding of past hominin behaviors.