The Crater Lake Game Sanctuary is a privately-owned sanctuary in Kenya that includes a small tented camp above the lake. The flat area of the crater is partially forested and home to black and white colobus monkeys as well as antelope such as Impala and Thompson’s gazelle. The lake has been the subject of numerous scientific studies due to its alkaline chemistry. The lake has been the subject of numerous scientific studies due to its alkaline chemistry. They get their name from the pigment phycocyanin, which exists alongside the green chlorophyll. The most common species in the lake is Arthrospira fusiformis, also known by its previous scientific name Spirulina. This is the primary diet of the lesser flamingo. Crater Lake Sanctuary, on the other hand, does not have many lesser flamingos, sometimes only a few, and alkaline-soda lakes are the only place where lesser flamingos can be found.