In reply to IPPurewater:
You can get to Pont in about half an hours car drive from Aosta.
There's a nice 2 to 3 hour walk from Pont up to the Chabod refuge.
The Gran Paradiso national park website is a good resource for planning hikes.
http://www.trekking-alps.com/hike/gran-paradiso-national-park-hiking/
There is plenty of camping in the Pont area as well as Valsavarenche.
Camping Pont Breuil at Pont
Camping Gran Paradiso a couple of minutes drive further North.