Mount Kenya covers a huge range of climate zones. Because you're almost exactly on the Equator, you go very quickly from rain forest to glaciers to the bare rock of the extinct volcano.
At 8,000 feet [2,438 meters], the bamboo is pretty impenetrable. But the elephants, one of the main players in the ecosystem, would plow these incredible highways. Here, Bobby Model is photographing a set of elephant tracks filled up like pots.
During our climb, we saw the tracks of leopards, buffalo, and Cape buffalo. They are all pretty common and go surprisingly high up the mountain. —Contributing Editor Matthew Power