Lake Manyara National Park is a national park in Arusha Region, Tanzania. The majority of the land area of the park is a narrow strip running between the Gregory Rift wall to the west and Lake Manyara, an alkaline or soda-lake, to the east. This is one of the most diverse of Tanzania’s national parks, a tiny (325km˛) combination of Rift Valley lake, dense woodlands and steep mountainside.