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    • Steep Snow Climbing Clinic
    • Anchors and Belaying on Steep Snow
    • Ski Mountaineering Clinic
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    • Glacier Ice Climbing Clinic – 2 day
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Timberline Mountain Guides
Search
  • TMG
  • Mt Hood
    • Summit Program
      • Mt Hood Summit Program
      • Summit Program at the Silcox Hut
    • Ski Mountaineering
      • Glacier Skiing
      • Ski Mountaineering Clinic – 1 day
      • Ski Descent of Mt Hood
      • Ski Circumnavigation of Mt Hood
    • Mount Hood’s Alpine Routes
      • Cooper Spur
      • Devil’s Kitchen Headwall
      • Reid Glacier Headwall
      • West Crater Rim
      • Leuthold’s Couloir
      • Wy’East Route
    • Clinics
      • Steep Snow Climbing Clinic
      • Anchors and Belay for Steep Snow Climbs
      • Crevasse Rescue Clinic
    • Mount Hood’s Advanced Alpine Routes
      • The North Face of Mt Hood
      • Sandy Glacier Headwall
  • Cascades
    • Mt Hood
      • Mt Hood Summit Program
      • Glacier Skiing
      • Cooper Spur
      • Steep Snow Climbing Clinic
    • Mt Baker
      • Coleman-Deming Glacier
      • Easton Glacier
      • The North Ridge of Baker
      • Mount Baker Alpine Skills Course – 4 Day
    • Mt Shuksan
      • Sulphide Glacier
      • Fisher Chimneys
    • Boston Basin
      • Mixed Alpine Skills Course – 4 day
      • Sahale Peak
      • Forbidden Peak
      • Sharkfin Tower
    • North Cascades National Park
      • Northeast Ridge of Mount Triumph
      • East Ridge of Eldorado
      • Northeast Ridge of Black Peak
    • Mt Jefferson
      • West Rib of Mt Jefferson
      • Jefferson Park Glacier
      • South Ridge of Mt Jefferson
    • Three Sisters
      • North Sister
      • Middle Sister
      • South Sister
    • Broken Top
    • Mt Washington
    • Mt Rainier – Emmons Glacier
    • Three Fingered Jack – South Ridge
  • Advanced Alpine Climbs
    • Fisher Chimneys
    • Jefferson Park Glacier
    • The North Ridge of Baker
    • The North Face of Hood
    • North Ridge of Forbidden
    • West Arete of Eldorado Peak
    • Torment-Forbidden Traverse
    • “Next Step” Alpine Climbs
      • Cooper Spur – Mt Hood
      • Devil’s Kitchen Headwall – Mt Hood
      • West Crater Rim – Mt Hood
      • West Rib – Mt Jefferson
      • Alpine Rock – 2-day
      • West Ridge – Mt Washington
      • Pico de Orizaba – Citlateptl
    • Entry-level Alpine Climbs
      • Coleman-Deming Glacier – Mt Baker
      • Sulphide Glacier – Mt Shuksan
      • Quien Sabe Glacier – Sahale Peak
      • North Ridge – Mt Washington
      • South Ridge – Three Fingered Jack
      • North Ridge – Middle Sister
  • Ski Mountaineering
    • Glacier Skiing
    • Ski Mountaineering Clinic – 1 day
    • Ski Descent of Mt Hood
    • Ski Circumnavigation of Mt Hood
  • Clinics
    • Steep Snow Climbing Clinic
    • Anchors and Belaying on Steep Snow
    • Ski Mountaineering Clinic
    • Crevasse Rescue Clinic – 1 day
    • Crevasse Rescue and Glacier Travel – 2 day
    • Glacier Ice Climbing Clinic – 2 day
    • Intro to Mixed Climbing
  • Alpine Rock
    • Intro to Alpine Rock – 2 day
    • Mt Washington
      • North Ridge of Mt Washington
      • West Ridge of Mt Washington
      • Southeast Spur of Mount Washington
    • Three Fingered Jack – South Ridge
    • Marsupials Traverse
    • Illumination Rock
    • Sharkfin Tower
  • (541) 312-9242
  • Resources
    • Equipment Lists
    • Rental Gear
    • Policies
    • Travel Insurance
    • Private Rates
    • Fitness Requirements
    • Frequently Asked Questions
  • About
    • Guides
    • Contact
    • AMGA Accreditation
    • Community Partners
    • I’m Interested in a Trip
    • Register
  • Search

South Sister

Prouty Glacier Headwall

South Sister  |  Spring  |  Summer  |  Snow  |  Difficult

South Sister Hike

South Sister  |  Fall  |  Summer  |  Entry-level

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