Thimlich Ohinga literally refers to a “frightening dense forest” in Dholuo language, a Nilotic group who occupy the region. The stone structure enclosure has walls ranging from 1.0 to 4.2 meters in height were built of loose stones and blocks without any dressing or mortar. Archaeological record of materials found within the site goes beyond 500 years ago. Since the present inhabitants of the area arrived probably some three centuries ago, it seems most likely that Bantus who initially occupied this region prior to the arrival of Luos first built the stone structures. Abundant rocks on the hilly areas provided them with building materials to meet their security requirements.