Washington · Rock climbing · North Bend

Mini-Mossy-Mammoth Boulder

Mini-Mossy-Mammoth Boulder is a 5-route bouldering area in Washington with 4 difficulty grades.

5 routes
V0 – V3
Bouldering

Is Mini-Mossy-Mammoth Boulder open right now?

Closure in the area

There's a closure order in Mt. Baker-Snoqualmie National Forest. It doesn't name Mini-Mossy-Mammoth Boulder, so check the source for the area it covers (3 listed).

As of · Source: USFS · Mt. Baker-Snoqualmie National Forest. Agencies don't list every closure — check before you go.

Best time to visit Mini-Mossy-Mammoth Boulder

Best months: July–September. Best months have typical highs of 55–85 °F, lows of 30 °F or warmer (32 °F where the station doesn't record snow), at most one snowy day and no more than 12 wet days.

  1. Jan

    39° / 32°

    19 wet · 5 snow

  2. Feb

    42° / 32°

    17 wet · 4 snow

  3. Mar

    46° / 33°

    20 wet · 4 snow

  4. Apr

    51° / 36°

    19 wet · 1 snow

  5. May

    59° / 42°

    17 wet

  6. Jun

    63° / 46°

    15 wet

  7. Jul

    70° / 51°

    9 wet

  8. Aug

    71° / 52°

    8 wet

  9. Sep

    64° / 47°

    12 wet

  10. Oct

    54° / 41°

    17 wet

  11. Nov

    44° / 36°

    20 wet · 2 snow

  12. Dec

    39° / 31°

    20 wet · 5 snow

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Cedar Lake, WA, 4.2 mi away at 1,560 ft. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Closures we've recorded since August 2026

  • Campfire Ban in Effect Forest-wide

    Mt. Baker-Snoqualmie National Forest · Order dated July 21, 2026; seen Aug 23, 2026 → lifted Sep 15, 2026 · Forest Service

Mini-Mossy-Mammoth Boulder is a bouldering area in the Snoqualmie Ranger District of Mt. Baker-Snoqualmie National Forest in Washington. It sits among a cluster of climbing and hiking spots, with Dugout Cave and the Mount Washington Trail both about 0.1 mile away and Amazonia about 0.2 mile off. The area has five bouldering routes, all rated between V0 and V3 on the V scale. The easiest is Alight at V0, and the hardest is Sabertwo'th at V3. The routes are all boulders, so there is no climbing on rock faces here. Summer is the most comfortable time to visit. Typical averages from the Cedar Lake weather station, about 4 miles away, show July and August highs around 70°F with only eight or nine wet days a month, while winter brings highs near 39°F and regular snow days. Tinkham Campground and the Cedar River, both about 6 miles away, offer camping and paddling.

Routes (5)

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