Rampart Ridge & Alta Mountain

A moderate to strenuous scramble of 8-12 miles round trip along a dramatic ridge with waterfalls, lakes, and tarns. Enjoy views of Hibox Mountain, Alta Mountain and other peaks in the Snoqualmie Pass area.

Driving Directions

Take Exit 62 (Kachess Lake) off of I-90 and follow signs 5 miles to Kachess Lake Campground. Turn left onto Box Canyon Road (Forest Road 4930) and drive 4.2 miles to Rachel Lake Trailhead.

approach & ascent

Rachel Lake

Hike the trail 4.4 miles through Box Creek Canyon to to Rachel Lake (4,700 ft).

Rampart Ridge

From Rachel Lake continue on trail north of the lake to ridge crest. Turn left (south) and follow the trail to Rampart Lakes. Stay on trails along the east side of the lakes until you get to base of large boulder gully with cliffs along the left side. Ascend gully via boot path to saddle, 5,570 ft, (path continues down other side). Turn west and continue on boot path up ridge to summit block. Ascend the final 20 feet either on exposed rock face (left side) or drop right and ascend slabs to summit. It's 12 miles round trip, 3,100 feet of elevation gain, and 5,870 ft highpoint elevation.

Alta Mountain

From Rachael Lake continue on trail north of the lake to ridge crest. Turn right (north) and follow the trail  and then ridge to the summit.


  • The technical rating varies according to whether snow is present. For snow, the trip is Strenuous 3, Technical 3. For rock, the trip is Strenuous 3, Technical 1.
  • Suitable Activities: Scrambling
  • Seasons: June, July, August, September, October
  • Weather: View weather forecast.
  • Difficulty: Strenuous 3, Technical 1, Technical 3
  • Length: 12.0 mi
  • Elevation Gain: 3,100 ft
  • 5,870 ft
  • Green Trails Snoqualmie Pass No. 207
  • Green Trails Snoqualmie Pass Gateway No. 207S
  • USGS Chikamin Peak
  • Red Marker
    47.401219, -121.285157
    47.4012187062 -121.285157204
  • Red Marker
    47.424741, -121.333222
    47.4247406344 -121.333222389

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