... seen along the trail between Dart Hut and Cascade Saddle, just west of the saddle proper.
Cascade Saddle sees a lot of visitors considering its remote location. The reason for that is because it's only a few hours hiking from Dart Hut, the half way point on the popular 4-day Rees-Dart tramp. So, if you're not tired yet, you can visit it on afternoon of the second day, or early on the third. And quite a few people simply plan an extra day, just for views like these!
Another way to get here is to come up over Cascade Saddle from the Matukituki valley. This is a more difficult route, and if you don't return to the Matukituki valley but continue to Dart Hut and beyond, along the Dart or Rees river, you'll end up in Glenorchy a few days later, and by road that's far away from where you started.
Mount Aspiring National Park, New Zealand.