The Porongurup Range rises from the landscape like an island surrounded by a sea of giant Karri trees. The Porongurup Range is over 1.1 million years old, making it one of the oldest ranges in the world. Its 12 kilometres long, 670 metres high and formed from solid granite. A 1.5km walk trail leads you through spectacular forests on your way to the Granite Skywalk. Enjoy the breathtaking, panoramic views from the 38 metre, upper and lower lookouts atop Castle Rock, just 15 minutes from Mount Barker. Numerous bushwalking tracks cater to different skill levels. Bolganup Heritage Trail is an easy 600 metre stroll and Marmabup Rock Trail is a three hour walk. The park also attracts rock climbers and bird watchers and is considered a mecca for botanists, wildflower enthusiasts and photographers with its unique flora (over 700 native species) and prolific bird life. Surrounding the national park are boutique wineries producing cool climate wines and accommodation offering lovely views over the range.