Iskanderkul Lake, also known as Lake Iskander, is a mountain lake located in the Fann Mountains of Tajikistan. It is situated at an elevation of 2,255 meters above sea level and is surrounded by rocky cliffs, lush green forests, and alpine meadows. The lake is fed by several mountain streams and is the source of the Iskander Darya River.

The lake is named after Alexander the Great, who is believed to have passed through the area during his conquests. It is a popular destination for tourists and locals alike, who come to enjoy its scenic beauty, clear waters, and abundant wildlife. The lake is home to several species of fish, including brown trout, rainbow trout, and marinka.

Visitors can hike around the lake and explore the surrounding mountains, or take a dip in the cool, refreshing waters. The area is also popular for camping and picnicking, and there are several guesthouses and yurts available for visitors to stay in.

One of the most popular attractions at Iskanderkul Lake is the Iskanderkul Waterfall, a stunning cascade that drops from a height of 40 meters. The waterfall is located at the western end of the lake and is accessible by a short hike from the main road.

Iskanderkul Lake is located about 130 kilometers from the capital city of Dushanbe and can be reached by car or bus. The best time to visit is from June to September, when the weather is warm and dry, and the lake is at its most beautiful.