Decent maps for abroad

[Kestonian]

Has anyone got a good source for buying decent maps for Austria? Doing a 2-day event in Mayrhofen and want to get an idea of the terrain (I kind of figure it will be hilly)

The touristy maps I've found so far are no use ... ideas welcomed

kEstonian

 

[m1kesmith]

check out the ariel photos on google earth?