The indigenous forests are awesome
The Garden Route contains some of the best examples of indigenous forest in Southern Africa. 'The Big Tree', an 800 year old Yellow-wood tree, is only 55 km out of Plett.
There are numerous walks through many of the forests, which are quite enjoyable. Especially if one takes some coffee or tea and sandwiches. There are services which make up picnic baskets, if you're in a rush...