Clouds of dust rising above the harsh scrub herald the arrival of more livestock at a borehole in north-eastern Kenya, the end for some of a 45-km (28-mile) trek for water that must be repeated every few days.
Drought is starting to bite in east Africa's biggest economy and the government has declared a state of emergency, saying 10 million people may face hunger and starvation after a poor harvest, crop failure, a lack of rain and rising food prices.
For an economy still recovering from post-election violence last year and facing fallout from the global slowdown on export markets, Kenya's looming food crisis risks putting more pressure on its fragile coalition government.
The Kenya Food Security Meeting (KFSM), a co-ordinating body of government ministries and non-governmental organisations, said last month food security was critical for 3.7 million people, including half a million schoolchildren.
"High food and non-food prices, livestock disease, crop failure and conflict have compounded already precarious food insecurity," the KFSM said in its January update.