Oak trees are a type of tree that, when chopped, give oak logs. You need level 15 Woodcutting to be able to chop them. With every log you chop you will gain 37.5 woodcutting xp. The logs that are recieved can be used for Firemaking or Fletching. To burn oak logs, you need a firemaking level of 15. To fletch oak logs you need at least 15 fletching.