Chrobry Oak

The Chrobry Oak is an oak tree, the largest oak in Poland and one of the biggest in Europe.
It is monumental oak with single-stemmed, hollow trunk, its girth was 1004 cm, height – 26 m and volume – 90 m³ (in 2014). Moreover, it is the oldest oak tree in Poland. Age of the "Chrobry" is about 760 years, according to dendrochronological research.
Oak was officially preserved (as a natural monument) since 1966.
"Chrobry" was measured in 1908 at the earliest, by Theodor Schube (German botanist), girth of the tree was 861 cm.
Tree was set on fire by vandals on November 2014. "Chrobry" remained in fatal condition, but in 2015 part of the crown was still alive.