Bird Tree and Benaroon, two of the biggest Blackbutt trees in New South Wales are situated in the Middle Brother National Park. Benaroon is rated as the largest Blackbutt in Australia and has a girth of 15 metres. Bird Tree, is 69 metres high, with a girth of 11 metres. Scientists estimate these trees predate the arrival of Captain Cook to Australia. The Bird Tree day use area provides a loop walk past the two giant trees.
This park is home to the largest and highest of the Three Brother Mountains in the Camden Haven region of the New South Wales mid north coast. Middle Brother or Yoorigan stands 558 metres above sea level and is a dominant feature when travelling the Pacific Highway.
The summit of Middle Brother is a mecca for para and hang gliders. A ramp has been installed by local pilots for these sports.