The car park is off a different unpaved road (no toll necessary) from the one that leads to Spranget. From there, you'll have to walk for about an hour each way to the falls. But the spur trail leading to the falls may be tricky to find as it's not well signed from the Peer Gynt Trail. All I can say is that if you've gotten to a point on the Peer Gynt Trail where you don't see any more mountain cabins, you've gone too far.

You might also see this waterfall spelled as "Vestlufossen" and "Veslulfossen." I'm sure there may be other variations of the spelling of this falls (which seems to be an interesting idiosyncracy amongst Norwegian names of attractions).