In terms of breadth, the Mäe-Lõhtsuu or Lõhtsu-Reinu oak tree is the second biggest in Estonia. It grows to the west of Urvaste church next to the Mäe-Lõhtsuu mill on a steep incline close to the ruins of Lõhtsu Farm. Its circumference is 7.03 metres, while it grows to a height of 28 metres. People say that the tree is almost 300 years old, although scientists reckon it must be older (at least 400).
Years ago, when the area around the tree was still covered in scrub, the hollow trunk of the tree was home to a bear enjoying its winter slumber.