The Udzungwa Mountains are a mountain range located in south-central Tanzania, East Africa. The range is part of the Eastern Arc Mountains and is known for its high levels of biodiversity and endemism, with many species found only in the Udzungwa Mountains.

The mountains are home to the Udzungwa Mountains National Park, which was established in 1992 and covers an area of approximately 1,990 square kilometers. The park is known for its beautiful scenery, waterfalls, and hiking trails.

One of the most popular hiking trails in the park is the Sanje Waterfalls Trail, which leads visitors through lush forests to the stunning Sanje Waterfalls. The park is also home to a variety of wildlife, including primates such as the endemic Iringa red colobus monkey and Sanje mangabey, as well as a number of bird species.

Overall, the Udzungwa Mountains offer a unique and beautiful destination for visitors interested in hiking, wildlife viewing, and experiencing the natural beauty of Tanzania.