Make tracks for the Ngorongoro Crater (approximately 4 hours), perhaps visiting Simba Kopjes along the way – an outcrop of rocks favoured by lions and cheetahs who can often be seen basking in the morning sun. On arrival, take in the amazing crater on a 4WD game drive. This is one of Africa's real natural treasures, often touted as a vast Garden of Eden. Within this crater lies every type of ecosystem, including riverine forests, open plains, freshwater and alkaline lakes. The scenery is spectacular as you descend almost 600 metres down to the crater floor. You are bound to see a variety of incredible wildlife here, and it's your best chance to spot the endangered black rhinoceros. Enjoy lunch by a lake – an area inhabited by hippopotamus, elephants, lions, and many others. Afterwards, head back up the crater walls to the National Park gate where you’ll get back on your bike and ride the undulating path to your campsite in Karatu.