Bos Elfbergen is the largest forest in Gaasterland. It is one of the forests that Esq Van Swinderen has laid out in the 19th century. The forest has coniferous and broad-leaved types of wood of all ages. The adjacent Wyldemerk is a nature reserve with an idyllic lake. The extraordinary nature of the Wyldemerk has ensured that this piece of nature has been declared a dragonfly reserve. In summer, up to 35 species of dragonflies can be found here.
Part of the Elfbergen forest has been designated as a dog forest, where (well-trained) dogs are allowed to run free.