Coldwater Peak, Harry's Ridge & Pumice Plain


Day Hike - Harry's Ridge

Explore the area in the blast zone with views of Mt St Helens, Spirit Lake, and Mt Adams; with optional carcamp at Seaquest State Park.

COVID-19: Learn about our most up-to-date guidance for participants and leaders on our COVID-19 Response page. All participants and leaders must agree to the COVID-19 Code of Conduct before participating in this Mountaineers activity.
  • Sun, Sep 10, 2017
  • Kitsap Branch
  • Exploring Nature, Day Hiking
  • Adults
  • Moderate
  • Moderate
  • Mileage: 8.2 mi
  • Elevation Gain: 970 ft

10:00 AM at Johnston Ridge Observatory

This is the 2nd hike this weekend for an exploring nature trip with geology. 

Please contact leader if you are making lodging arrangements.   Leaders will be located at Seaquest State Park in preparation for hikes on Saturday, September 9 and Sunday, September 10...and will share potential carpool connections based on registration. 


Christine Grenier

(360) 536-1640

We will make periodic stops in the event there are wildflowers, and to discuss geologic features.  Likely 1 1/2 - 2 mi/hour pace.   Please bring trekking poles since this route is exposed.  


Coldwater Peak, Harry's Ridge & Pumice Plain

  • Green Trails Mount St Helens NVM No. 332S

    Green Trails Spirit Lake No. 332

    Green Trails Mt St Helens No. 364
  • See full route/place details.
Required Equipment

Required Equipment

The Ten Essentials

  1. Navigation
  2. Sun protection
  3. Insulation (extra clothing)
  4. Illumination
  5. First aid supplies
  6. Fire
  7. Repair kit and tools, including knife
  8. Nutrition (extra food)
  9. Hydration (extra water)
  10. Emergency shelter
Trip Reports