It's a long walk just like the last poster wrote but it's worth it.
On top you'll have a great view on the surrounding mountains including Grossglockner.
The via ferrata grade is a/b so can be done solo (like I've did).
"As an adolescent I aspired to lasting fame, I craved factual certainty, and I thirsted for a meaningful vision of human life - so I became a scientist. This is like becoming an archbishop so you can meet girls."