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Stone Plus One Canyon - 3A-III

Stone Plus One Canyon is located in the Big Tujunga section of the San Gabriel Mountains. This canyon is a 2.7 mile, 6-8 hour, 3A-III trip requiring rappelling, down climbing, scrambling, a 1500ft relatively-steep approach ascent, and a possibly-wet river crossing. About 10 raps: 50ft, 70ft, 50ft, 15ft, 40ft, 80ft+60ft, 35ft, 50ft, 50ft, 35ft.

Located north of Burbank/Tujunga, about 7 miles up Big Tujunga Canyon Rd from Foothill Blvd. Since the gate to Wildwood parking area is closed, enter from Vogel Flat Rd (GPS [masked],[masked]) and then turn right at the T-junction for Stoneyvale Rd. Continue about 0.7 mile north-west to a dirt pull-off on the left here: GPS[masked],-118.234485. Loop hike, no vehicle shuttle necessary. Elevation is about[masked]ft. Participants should have at least a “low-intermediate" skill set.

Limit 8 participants, plus waiting list. If the waiting list contains people capable of forming a second gear-independent and navigation-independent team (and a person qualified/willing to lead it), it might be possible to split into two teams and include more participants.

Required gear:

@TEAM: (Minimum) 200' rope, 120' rope, 120' rope, 50' webbing, 4 rapides.

@INDIVIDUAL: harness, helmet, descender, prusiks, locking biners, food/water, and any other typical personal gear.

MEETUP Locations, Sunday, March 10th:

McDonalds Parking Lot, 8:00am

7950 Foothill Blvd, Sunland, CA 91040

GPS:[masked], [masked]

Stoneyvale Road dirt pull-off/Parking, 8:20am



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  • Deven

    Strenuous but easy on-trail approach and exit access. A bit of bushwhacking in canyon. Water flowing at about 1/3cfs. About 6 hours. Several bolt stations need repair or improvement. Removed one defective bolt that was only an inch deep in crumbling rock. Great to meet you all. Cheers.

    March 12, 2013

  • Justin A.

    Thanks everyone for a fantastic day!

    March 10, 2013

  • Justin A.

    I'll be meeting you guys at the stonyvale rd parking area.

    March 9, 2013

  • Deven

    Don't forget Sunday morning is Daylight Savings Time; turn clock ahead one hour. See you at 8am DST, not 9am by error. Cheers.

    March 9, 2013

  • Deven

    Hello Jason/Justin/all. I won't be checking this site or email for messages after this. See you at the meetup locations. Bring rope if you have it please. Thanks.

    March 9, 2013

  • Deven

    Weather forecast for Sunday: Sunny and about 70. Light breeze.

    March 7, 2013

  • Deven

    Canyon Synopsis (from Brenner data): Upper Dropin:
    Rap1: 50ft (+20ft anchor)
    Rap2: 70ft
    Rap3: 50ft
    Rap4: 15ft
    Downclimb: 35ft Lower Dropin:
    Brushy and brambly wooded section
    Awkward narrow slot waterfall that can be bypassed to the right
    Unpleasant bush-filled section, by-passable on the right
    Rap5: 40ft
    Panoramic viewpoint
    Rap6: 80ft upper stage to shelf
    Rap7: 60ft lower stage to bottom
    Short brushy section
    Downclimbable rocky chute, which makes sharp right turn at bottom
    May need to anchor at top of chute for next rap
    Rap8: 35ft from bottom of chute
    Panoramic viewpoint
    Rap9: 50ft
    Two downclimbs
    Rap10: 50ft
    Rap11: 35ft (+15ft anchor)
    Narrow slot
    Easy wooded section
    Canyon exit
    Cross Mill Creek

    1 · March 4, 2013

  • Deven

    Stone Canyon Trail:[masked], [masked]
    Lower Dropin: [masked], [masked], 2840ft
    Upper Dropin: [masked], [masked], 3260ft
    Canyon exit: [masked], [masked], 1850ft

    1 · March 4, 2013

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