The land is dry around Katikati village in northern Tanzania and water is scarce. The Maasai here travel up to 100 kilometres a day searching for water and it's a dangerous journey. But now they know that there is water - 180 meters under their feet. After drilling a borehole here, the Maasai can access clean water and they've started to settle, building a school and more permanent houses. But how will this affect the land and their culture?