Part of the Makgadikgadi complex, Nxai Pan National Park comprises several large pans. Unlike the salt-encrusted pans at Makgadikgadi, Nxai Pan is a waterless fossil pan covered in grass with acacia islands. The area comes to life after the summer rains in December, when big herds of migrating zebra and wildebeest, accompanied by other grazers, arrive to feast on the new grasses.