The Stelmužė Oak is a famous oak tree located in Lithuania, known for its impressive size and age. Standing at 23 meters tall with a diameter of 3.5 meters, this ancient oak is estimated to be around 1,500 to 2,000 years old, making it one of the oldest oaks in Europe. Despite being heavily damaged by infections and fungi, efforts have been made to protect and preserve this natural monument. An offspring of the Stelmužė Oak can be found growing in the National Revival Oak Grove, along with other famous Lithuanian oaks