It's worth a check to see if anyone by chance has experience or info about this valley in Norway. I'm interested in the rock rather than ice climbing. I'll be there for at least one week in July.
This is all I've found so far:
Hemsedal
A traditional rock climbing area, with numerous routes located on goodquality gneisses. Routes are 3-10 pithes, grades IV-VII, some aid routes.Hemsedal is known for its ice-climbs (waterfall-ice). Routesfrom grade III to VI (Scottish grading). Potential for mixed climbing,wintertime, is terrific, though few seem to realize that.
Guidebooks: Skandinavisk høyfjellsutstyr in Hemsedal.
Cheers