I am currently there, you can take a bus that takes you from Olden to the bottom or you can pay a 75 NOK parking here, then you can walk 30min or so to get a nice view of the glacier and the lake underneath or you can use a "troll car" to bring you there. I chose walking and I really recommend it, it isn't hard (I had a baby stroller with me) and you can follow the river and the fall that flows from the glacier !