The Waisali Rainforest Reserve is a patch of lowland tropical forest inland from Savusavu, protecting one of the last significant stands of native vegetation on Vanua Levu. The island's interior has been heavily modified by sugar cane farming and copra plantations, making Waisali an important refuge for native species. Several marked walking trails lead through the reserve; the main loop takes about two hours at a comfortable pace.
The birdlife is the main attraction: the silktail, endemic to Vanua Levu and Taveuni, has been recorded here, as have various Pacific doves, honeyeaters, and parrots. The forest floor is rich with ferns and orchids. The reserve is managed by the National Trust for Fiji; entry fees are modest and go directly to conservation work. A guide from the nearby village of Waisali is worth hiring both for the birdwatching knowledge and the support it provides to local families.