You'll leave Nairobi at 7am and head out to Hell's Gate National Park where you get great views of the Great Rift Valley right away. Once there, you'll spend 2 hours biking through the park to look for giraffes, zebras, and buffalo in their natural habitat. After the bike tour wraps up, there's a 1-hour gorge walk to do on foot. Around midday you'll grab lunch at a restaurant nearby, then head to Lake Naivasha for a 1-hour boat ride where you can watch hippos, buffalo, and different bird species from the water. From there it's the drive back to Nairobi, arriving around 6pm.