don't know about the accomodation beyond camping, but winter can be awesome.
Be warned though, the cold is not such a coveted thing at Araps than in Sheffield. It does help friction, but not to the extent you're used to.
You will likely get a few rainy days here and there. Many places dry off reasonable quickly afterward (can anyone elaborate on this?)
Week long rain is a rartity, but on the rare occasion that the weather does get too much, you can go the grampians and inhabit some overhung walls and bouldering caves. |