Tanui, known to his colleagues simply as 'Tango,' joined the Lewa Wildlife Conservancy in 1995. At the time, the sanctuary was a modest effort on a former cattle ranch, where rangers relied on the unpredictable crackle of analog VHF radios and the steady scratch of pens on paper. Tanui became the bridge between these two eras. As the security communications officer, he helped build the Joint Operations Command Centre, a twenty-four-hour hub that now monitors the landscape with digital precision.
He saw the fences fall in 2013, when Lewa merged its borders with the neighboring Borana Conservancy to create a vast, unfenced corridor for migration. Throughout this expansion, Tanui remained the steady hand in the control room, integrating software that could track a ranger’s footsteps or an elephant’s pulse on a single screen. Yet his colleagues remember him less as a technician and more as a mentor who insisted that the technology serve the person, not the other way around.
In his final years, Tanui’s work took him far beyond the borders of Meru. He traveled across the continent, teaching park teams and rangers from other nations how to manage their lands with the same quiet brilliance he had cultivated at home. He collaborated with international organizations like Tusk and EarthRanger, but he always returned to the red dust of the Rift Valley, where he treated his team as a family rather than a hierarchy.
When conservationists gathered for his burial on March 25, 2026, the stories told were not of software updates or statistics. They spoke of a man who could identify a bird by a fleeting shadow and who, after thirty years on the ground, still found his breath taken away by the sight of a lion in the evening light. He left behind a landscape that is safer than the one he found, and a generation of rangers who carry his patience into the field.