Located within the large area of
temperate savanna grasslands the park incorporates the most spectacular part of the Warrumbungle mountains, a region of past
volcanic activity with unusual
lava formations. Some of the most well-known rock formations include Belougery Spire, Bluff Mountain, Mount Exmouth (tallest mountain in the park),
The Breadknife, Split Rock, Fans Horizon and Crater Bluff. There are many scenic bushwalks and both rock climbing and abseiling are popular. Though the park preserved habitat for
koalas in the past, a massive 2013 fire decimated the koala population; none are thought to have survived. Located immediately adjacent to the national park is the
Siding Spring Observatory. The observatory, officially opened in 1965, was constructed on the boundary of the park partly because the park provided a light-free environment. This scientific facility consists of several internationally important telescopes and has considerable socio-economic importance to the local Coonabarabran community. ==Facilities==