Every year, Survival International – the global movement for tribal peoples' rights – ask their supporters to submit pictures of indigenous people they've met on the road for the annual "We, The People" calendar. These images give an insight into the diverse ways of life tribal people live, so here are the winning images featured in this year's calendar.  Pictured here is the calendar cover image by Timo Heiny, depicting a Samburu man in Kenya overlooking the plains.