Sabino Canyon and Phoneline trail

Outside of Tucson at the base of the Santa Catalina mountains is Sabino Canyon.  Ran it in the 1980s and returned this spring.  On, what I thought would be a quiet Sunday morning, the parking lot was packed at 8 am!  Most everyone goes to the waterfall on an easier trail so I asked the incredibly helpful volunteers which trail would be the gnarliest.  Phone line!  And they were correct!  Rugged and magnificent!