Biosphere
Among the hardest routes catalogued at Boney Bluff.
- 5.13c/d
- grade
- Sport Bolted
- style
Is Biosphere open right now?
No closures listed
The National Park Service lists no closures for Santa Monica Mountains National Recreation Area.
As of · Source: NPS · Santa Monica Mountains National Recreation Area. Agencies don't list every closure — check before you go.
Best time to visit Biosphere
Best months: October–June. 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
67° / 47°
6 wet
Feb
68° / 47°
7 wet
Mar
71° / 49°
5 wet
Apr
75° / 52°
3 wet
May
78° / 56°
1 wet
Jun
84° / 60°
1 wet
Jul
90° / 64°
0 wet
Aug
92° / 64°
0 wet
Sep
89° / 62°
1 wet
Oct
82° / 56°
2 wet
Nov
74° / 50°
4 wet
Dec
67° / 46°
6 wet
Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Northridge Cal State, CA, 26.4 mi away at 904 ft. The station sits about 1,500 ft lower than this place, so expect it a little cooler here. Source: NOAA NCEI U.S. Climate Normals 1991–2020.
One of the harder climbs catalogued at Boney Bluff, sitting near the top end of the crag's 5.11b to 5.13d range alongside a dozen other routes at this grade.
Keep exploring — more climbs worth the drive
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~3 min drive
Pink Wall in California has 10 sport climbing routes across 8 difficulty grades.
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~3 min drive
Tower of Zen is a California climbing area with 14 sport routes across 9 grades.
Photo: simonov, CC BY-SA 2.0 (via Flickr)Zombie Wall
~3 min drive
Zombie Wall is a sport climbing crag in California with 5 routes.
Photo: simonov, CC BY-SA 2.0 (via Flickr)White Wall
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White Wall in California offers 11 sport climbing routes across 8 difficulty grades.
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~3 min drive
Echo Cliffs is a California climbing crag with 13 sport routes.

