The greatest lion stronghold on Earth, spanning three legendary East African parks. Tanzania's Serengeti holds vast prides and concentrates much of Africa's lion population; Kenya's Masai Mara is home to the famed Marsh Pride of BBC's Big Cat Diary; the Ngorongoro Crater creates a self-contained ecosystem with exceptionally high lion density. Calving season in the southern Serengeti (January-March) draws predators to half a million vulnerable wildebeest calves; the Mara River crossings (July-October) bring another predator-prey peak. Year-round sightings guaranteed across the combined ecosystem.