I've been visiting Taveuni's Ravilevu coastline since 1983 and it is truly the land of waterfalls - and I've jumped a few in my 64 years of adventure. If you want to see some really nice stuff, check out http://www.johngray-seacanoe.com/gallery/fiji/taveuni.htm
Not promoting any trip. I live in Thailand now - just enjoy. Apologies I cannot post photos as this is a commercial site although I'm not running trips to Fiji now that I'm in Thailand.