Influenza
Among the hardest problems at Mortar Rock's 55 catalogued climbs.
- V10
- grade
- Bouldering Pads
- style
Best time to visit Influenza
Best months: Year-round. 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
59° / 43°
11 wet
Feb
62° / 44°
10 wet
Mar
65° / 46°
10 wet
Apr
67° / 47°
7 wet
May
70° / 49°
3 wet
Jun
74° / 52°
1 wet
Jul
74° / 53°
0 wet
Aug
75° / 54°
1 wet
Sep
76° / 54°
1 wet
Oct
73° / 52°
3 wet
Nov
65° / 47°
7 wet
Dec
59° / 43°
11 wet
Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Berkeley, CA, 1.5 mi away at 310 ft. Source: NOAA NCEI U.S. Climate Normals 1991–2020.
One of the hardest problems at Mortar Rock, where the 55 catalogued climbs span from V0 to V13.
Photo of the crag
Keep exploring — more climbs worth the drive
Photo: kevin dooley, CC BY 2.0 (via Flickr)Berkeley
~0 min drive
Berkeley, California has 4 climbing routes with 3 difficulty grades.
Photo: Burkhard Mücke, CC BY-SA 4.0 (via Wikimedia Commons)Water Fountain Wall Area (East Side)
~0 min drive
Water Fountain Wall Area (East Side) is a California climbing crag with 9 routes and bouldering pads.
Photo: User:Tfinc, CC BY-SA 3.0 (via Wikimedia Commons)North face (Indian Rock)
~0 min drive
North face (Indian Rock) is a climbing area in California with 9 routes.
Photo: User:Tfinc, CC BY-SA 3.0 (via Wikimedia Commons)Great Stone Face
~1 min drive
Great Stone Face in California has 10 bouldering routes across 9 difficulty grades.
Photo: albategnius, CC BY-SA 2.0 (via Flickr)Cragmont Park
~1 min drive
Cragmont Park in California has 3 bouldering routes.
Photo: Tbo47, CC0 (via Wikimedia Commons)Pinnacle Rock
~1 min drive
Pinnacle Rock in California has 10 routes across 9 grades, offering bouldering and sport climbing.
Photo: Joe Passe, CC BY-SA 2.0 (via Flickr)Glen Canyon
~24 min drive
Glen Canyon is a California climbing crag with 5 routes ranging from moderate to hard.
Photo: Joe Passe, CC BY-SA 2.0 (via Flickr)The Unnatural Act Cave
~24 min drive
Unnatural Act Cave, The in California has 9 bouldering routes across 6 grades.
Photo: Joe Passe, CC BY-SA 2.0 (via Flickr)Main Cliff Band
~24 min drive
Main Cliff Band in California has 5 climbing routes across 4 grades.
Photo: albategnius, CC BY-SA 2.0 (via Flickr)Deliverance Rock
~27 min drive
Deliverance Rock in California has 6 sport climbing routes across 6 difficulty grades.
