..the Kalenjin originated from a country in the north known as Emet ab Burgei, which means, the hot country. The people are said to have traveled southwards passing through Mount Elgon or Tulwet ab Kony in Kalenjin. The Sabaot settled around the slopes of the mountain while the others travelled on in search of better land. The Keiyo and Marakwet settled in Kerio Valley and Cherangani Hills. The Pokot settled on the northern side of Mount Elgon and later spread to areas north of Lake Baringo. At Lake Baringo, the Tugen separated from the Nandi and the Kipsigis. This was during a famine known as Kemeutab Reresik, which means, famine of the bats. It is said that during this famine a bat brought blades of green grass which was taken as a sign of good omen signifying that famine could be averted through movement to greener pastures. The Tugen moved and settled around Tugen Hills while the Kipsigis and the Nandi moved to Rongai area. The Kipsigis and Nandi are said to have lived as a united group for a long time but eventually were forced to separate due to antagonistic environmental factors. Some of these were droughts and invasion of the Maasai from Uasin Gishu.