Contact with Nilotic communities In the narratives of various Meru informants, contact with Nilotic communities occurred on the star grass zone or lower forest ranges of Mount Kenya. The totality of traditions indicate that these communities belonged to one or more sections of the Kalenjin-speaking peoples.
Lumbwa According to Igoji and Imenti informants, the Umpua were a tall, slender, cattle-keeping people. They herded small numbers of cattle and goats and lived solely from the milk and meat of their herds. The Umpua kept their livestock in pits at night. These were dug by the herders themselves and were gradually deepened as mud was removed after the rains. The earth and dung were heaped next to the pit to form a mound, within which the Umpua are recalled as having placed their dead.
Agumba Meru traditions recorded in Mwimbi and Muthambi recount that the pastoral Lumbwa lived in association with a hunting community remembered as
Agumba (or Gumba). The Gumba were said to live in "Agumba pits", large or squarish depressions, located along a line that runs roughly along the zone at 7,000–7,500 feet. This zone delineates the lowest edge of the forest from the highest point in the star-grass zone. ==Muku-Ngaa identity==