Contrary to its name, Thunder Creek Falls is actually a graceful and narrow 28m waterfall tumbling across the powder blue Haast River. I think it is the most scenic waterfall in the Haast River Valley and Haast Pass area. It is also a very popular waterfall since it has a well-signed car park and a short walk of 5-10 minutes that is wheelchair-accessible. Definitely don't miss out on this one if you're passing through this part of Mt Aspiring National Park.