Easier Directions
Use Google Maps to Get to the Marker
http://maps.google.com/maps?q=6550+Silverbell+Rd,+Tucson,+AZ&hl=en&ll=32.325583,-111.072539&spn=0.000809,0.001206&sll=32.325845,-111.072386&sspn=0.001619,0.002411&hnear=6550+N+Silverbell+Rd,+Tucson,+Arizona+85743&t=h&z=20
Then follow this picture