Not a sound (apparently misnamed), this is actually a fjord. (We learned that sounds are created by rivers, fjords by glaciers). We flew there in on a Cessna (top photo includes the wing), and took an overnight cruise out on a sailboat. Spectacular 5,000 foot mountains that rise straight out of the Tasman Sea, with waterfalls too numerous to count. Before dinner, we took a little kayak trip to a BIG waterfall (look for the wee yellow kayaks at the bottom of the photo)