I'm guessing that the snow/cave story that you're looking for is 'Mayday' by Satina. The 3rd person POV is most likely 'Tight Squeeze' by Flutesong. Find them at:
http://www.hegalplace.com/satina/mk/mayday.html
http://www.hegalplace.com/satina/mk/mayday2.html
http://www.hegalplace.com/flutesong/tightsqueeze.html