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New at Basecamp and have downloaded MYTRAILS(MO) which has many of the trails I am after.  However when I bring it up in base camp I have the trails but no underlying topo map picture .  I may be missing a concept here so please help me understand.  I imagined that mytrails would overlay on some sort of topo map, but I can only select one map at a time and mytrails does not have the topo under it?

AlanCMO