This tree is called "Bartek". Bartek is an ancient oak tree in Poland. It grows in Zagnańsk near Kielce in the Świętokrzyskie Mountains. Its age, long estimated at up to 1200 years, has recently been determined more exactly, with a corer used to extract a sample for proper counting of the growth rings. There are at least three older oaks in Poland, though none so famous as Bartek.
The 30-metre tall Bartek measures 13.5 metres in girth at its base. Its crown spreads about 40 metres. Under the Bartek oak tree, King Casimir III is known to have been pictured as holding his court. It is also told that Jan III Sobieski rested under this tree on his way back from the Battle of Vienna, and hid a Turkish sabre, an arquebus and a bottle of wine inside it. The old oak is in decline.
Girth growth rateThe girth was measured more than once:
|Year||Girth@1.3 m||Measurement||Girth growth rate|
|1998||9.45 m||Jeroen Pater||-|
|2013||9.71 m||Andrew Weber||2 cm/year|
HeightThe height was measured more than once:
|1998||~23.00 m||Jeroen Pater||Measurement method unknown|
|2014||28.90 m||Andrew Weber||Laser with Sine method (e.g. Nikon Forestry 550 laser rangefinder)|
AgeThe age of the tree was estimated by these persons:
|Year||Planting or germination year||Age||Measurement|
|Oct 1, 2011||1385 ± 10||629 ± 10 y||Tim B|
|Jan 21, 2014||1340 ± 10||674 ± 10 y||Stoj|