The Luba Crater Scientific Reserve, also known as Gran Caldera de Luba, is a protected area spanning 51,000 hectares on Bioko Island in Equatorial Guinea. Established in 2000, it encompasses the volcanic Luba Crater, the highest point of the southern massif at 2,261 meters. The reserve features diverse ecosystems, including lowland rainforests, montane forests, and palm tree forests, supporting a rich array of flora and fauna. Notably, it is home to several primate species of global conservation concern, such as Preuss's monkey, red-eared guenon, black colobus, western red colobus, and drill. The reserve also provides critical nesting sites for endangered sea turtles, including green, hawksbill, olive ridley, and leatherback turtles. Additionally, the reserve has been designated an Important Bird Area (IBA) by BirdLife International due to its significant populations of various bird species.