Pyroclastic flow
Mid-range climb at Pyroclastic Wall, one of three routes catalogued in this sector.
- 5.11a
- grade
- Sport Bolted
- style
Is Pyroclastic flow open right now?
Alert in the area
The National Park Service lists an alert for Lassen Volcanic National Park.
Icy Road Conditions - October 23, 2026
Park alert covering Lassen Volcanic National Park · NPS · Lassen Volcanic National Park
As of · Source: NPS · Lassen Volcanic National Park. Agencies don't list every closure — check before you go.
Best time to visit Pyroclastic flow
Best months: May–October. 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.
Jan
41° / 22°
Feb
42° / 22°
Mar
46° / 24°
Apr
50° / 27°
May
61° / 35°
Jun
70° / 41°
Jul
79° / 46°
Aug
78° / 45°
Sep
72° / 41°
Oct
59° / 33°
Nov
47° / 26°
Dec
39° / 22°
Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Manzanita Lake, CA, 5.6 mi away at 5,750 ft. The station sits about 1,000 ft lower than this place, so expect it a little cooler here. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.
One of three climbs catalogued at Roadside Distraction Area's Pyroclastic Wall sector, situated mid-range within the crag's 5.11- to 5.12- span.
Photo of the crag
Keep exploring — more climbs worth the drive
Photo: randomduck, CC BY-SA 2.0 (via Flickr)Roadside Distraction Area
~0 min drive
Roadside Distraction Area is a California climbing crag with 3 sport routes.
Photo: randomduck, CC BY-SA 2.0 (via Flickr)Roadside Distraction
~0 min drive
Roadside Distraction in California has 9 routes with mixed and sport climbing.
Photo: Daniel Schwen, CC BY-SA 2.5 (via Wikimedia Commons)Left of the Regular Route
~6 min drive
Left of the Regular Route in California has 24 routes with 14 difficulty grades.
Photo: Daniel Schwen, CC BY-SA 2.5 (via Wikimedia Commons)First and Second Terrace
~6 min drive
First and Second Terrace in California has 9 climbing routes across 7 difficulty grades.
Photo: Ken Lund, CC BY-SA 2.0 (via Flickr)The Fallout Zone
~22 min drive
Fallout Zone, The in California has 9 climbing routes across 8 grades.
Raker Peak
~1 min drive
Raker Peak in California has 3 climbing routes with sport and trad options.
Finger Rake Area
~1 min drive
Finger Rake Area in California has 5 trad climbing routes on 4 difficulty grades.
Right of the Regular Route
~6 min drive
Right of the Regular Route in California has 10 routes with 9 difficulty grades.
Lassen National Park
~7 min drive
Lassen National Park in California has 2 climbing routes with mixed protection.
The Cat Walk
~7 min drive
Cat Walk in California offers 6 climbing routes with sport and trad options.
