The park falls into four parts. In the southwest lies the main gate, with groundwater forest and behind it Serengeti Ndogo, the little Serengeti. That is the only open plain in the park, and the only place where you see larger groups of zebra and buffalo grazing. Early in the morning it is at its best.
In the southeast lies the Ngurdoto crater, a wooded bowl more than three kilometres across and about a hundred metres deep. The floor has been closed to visitors, vehicles and walkers since 1967. That makes it an undisturbed reserve inside the park. You look at it from the viewpoints on the rim, where buffalo and sometimes elephant stand below.
In the northeast lie the Momella lakes. Here you paddle the canoe, giraffe and zebra stand along the shores, and the waterbirds are. The animals do not drink from the lakes, because the water is alkaline, but they do graze on the banks. And in the west lies the Meru massif, with forest, waterfalls and the route to the summit.
Arusha counts as the quietest park on the northern circuit. Where in the Ngorongoro crater you can sit in a line of jeeps, here you are often alone. That is one of the reasons travellers value the park, even though they see less big game.