Went up to Donner Lake interchange parking lot to access Castle Peak yesterday. Followed tracks 2-3 miles in and then were unable to find our way to Castle Peak. No markings along trail to speak of. Didn't have time to load up again and drive to/unload at Boreal access--and parking there is always awful. So, could someone describe how to travel from Donner Lake Interchange parking lot to Castle Peak? I looked all over the web and can't find any helpful information. The maps at the DL Interchange aren't helpful either.