Ape Canyon

A moderate day hike along a ridge next to the volcanic mudflats on the southeast corner of Mount St. Helens.

along the trail

Hike alongside the massive mudflow that swept the Muddy River to a viewpoint that overlooks the lahar basin and the volcano. Further up the trail is a ridgetop that looks down into Ape Canyon and up onto East Dome on the flank of Mount St. Helens.


  • This trail is open to mountain bikers.
  • Suitable Activities: Day Hiking
  • Seasons: May, June, July, August, September, October, November
  • Weather: View weather forecast.
  • Difficulty: Moderate
  • Length: 9.4 mi
  • Elevation Gain: 1,550 ft
  • 4,175 ft
  • Green Trails Mount St Helens NVM No. 332S
  • Green Trails Mt St Helens No. 364
  • Red Marker
    46.165367, -122.091401
    46.1653672609 -122.091400623
  • Red Marker
    46.195457, -122.133071
    46.1954573744 -122.133071424

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