Plauginiai Forestで最も古い樹木はどれですか。
Plauginiai Forest's mapped trees are the Beautiful Oak of Plauginiai Forest (Grazusis azuolas), a pedunculate oak about 5.8 metres round and 32 to 33 metres tall, reached by a purpose-built interpretive trail inside a botanical-zoological reserve of Dubysa Regional Park, and the Mikalojaus Dauksa Oak, about 19 kilometres away on a stream slope in Betygala.
The state forest service assessed the oak on 8 June 2017 and recorded 32 metres of height, 5.8 metres of girth at chest height and a condition of excellent. A local news report the following spring gave 5.8 metres and 33 metres, matching the figures carved into a wooden acorn marker at the foot of the trunk. Back in 1985 the figures were 28 metres and a diameter of 1.4 metres, so the tree has put on both height and thickness since somebody last got out the tape. It has been a nature monument since 1960 and was raised to republic-level significance in 1985, when the state decided this particular oak was worth pointing traffic at: it is signposted by name, Grazusis azuolas, the Beautiful Oak, from the public highway three and a half kilometres out. What waits at the end of the gravel road is a 400-metre interpretive trail built for one tree, with carved oak sculptures along it and a rest area with a pavilion and a fireplace. Its age is given as about 300 years by every source that mentions one, the wooden acorn included, and none of them says where the number comes from.