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I saw the thread below regarding Base Camp.  Is there another way for me to view the topos I downloaded from here on my mac computer.

I'm new to this so I apologize if this is a basic question.  I followed the tutorial here and downloaded the Pennsylvania and New York Topo maps onto my MAC.  I have two files with .tar and two .gmapi files.  I was able to succesfully downloaded these onto my Garmin Venture Etrex GPS unit.  So far so good.  However, I would like to be able to view them on the software that Garmin includes for view on your compute - BaseCamp.  Unfortunately, BaseCamp on sees the Garmin maps I purchased.  Any ideas on how to view the more detailed topo maps on my computer.

Thanks