Originally Posted By: MooseTracks
I would instead recommend a trail map of the Whitney Zone by Tom Harrison . They are available at REI and pretty much all outdoor stores.
Hi MooseTracks,

I own "Mt. Whitney Adventure Map" "© 2006 Sierra Maps".
It's way too dark and almost useless in low light conditions.
Do you believe that Tom Harrison map is better?


Originally Posted By: MooseTracks
... I've gotten the warning beeps on the lower sections of both the north fork and main trail
Are you sure that you GPS is not broken? Have you tried updating firmware?

I recorded "good enough" tracks with my own Garmin 60CSx up to Whitney Crest and LBL.