Snowmobiling in Austria

Hi,
First, great website - thanks I will use your sight often as my sister just moved to Vienna.
I want to come over to see her this winter and I am wondering if there are any places in Austria where people snowmobile? Can you rent sleds - so you have any contacts?

Thanks so much, xxx

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My reply:

Thanks for your kind words regarding my website! I have never come
accross snowmobiles in Austria except for emergecy services that use
them on slopes. So I am afraid I can not offer any information on that
- if you find a place that offers snow mobiles, I would be grateful if
you could inform me about it so that I can include a few words on it
on the website.

Thanks a lot and enjoy Austria,

Benedikt