The Old Jungle, also known as the Rain Forest, is a location introduced in Monster Hunter, characterized by dense, visibility-inhibiting vegetation, rivers and cold caves filled with ankle-depth water. This harsh environment is home to many monsters, such as Yian Kut-Ku, Khezu, Gypceros and Plesioth. This location has plentiful amounts of mushroom and bug gathering spots.
Vespoid, Hornetaur, Ioprey, Velociprey, Giaprey, Aptonoth, Melynx, Kelbi, Mosswine, Great Thunderbug, Bullfango, Conga, Remobra
Queen Vespoid, Iodrome, Yian Kut-Ku, Gypceros, Hypnocatrice, Khezu, Rathian, Pink Rathian, Gold Rathian, Plesioth, Green Plesioth, Nargacuga, Emerald Congalala, Daimyo Hermitaur, Kirin