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The weeks around the vernal equinox are the best times to look up and behold, green curtains of light dancing across the night sky. This is a bit of a puzzle. Auroras are caused by solar activity, but the Sun doesn't know what season it is on Earth!
Recommended: Gear
Great for hikers, birders. Compact. 9x magnification. Multicoated optics. Hi-index BaK4 prisms....
Traveling up to 21,000 miles a year, it is the longest migration for any mammal (from their breeding colonies in Mexico and California to Alaska or the north Pacific Ocean to feed and then return to their breeding colonies). It is the only mammal to make 2 long distance migrations a year.
Recommended: Gear
Great for hikes. Multi-compartment design. Side mesh water bottle pockets & 3L hydration reservoir (bladder not incl.). Ventilated Vapel mesh keeps...
Active-Days Top Picks
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As with other events, you can add your Ratings, RSVPs, Comments/Tags & Trip Reports from the Details pages. |
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Sat Jul 4 7:00 PM | Hiking
Black Diamond Mines Regional Preserve
Antioch | East Bay
Moderate ![]()
[ 03:30h
:: miles :: feet ]
East Bay Regional Park Distri…
Sun Jul 5 10:00 AM | Hiking
San Francisco | San Francisco
Moderate ![]()
[ 04:30h
:: 5.0 miles :: 700 feet ]
GreenBelt Alliance…
Sun Jul 5 10:30 AM | Active Learning
Fremont | East Bay
Easy ![]()
[ 04:00h
:: miles :: feet ]
East Bay Regional Park Distri…
Sun Jul 5 2:00 PM | Hiking
Los Trancos Open Space Preserve
Skyline Blvd | Peninsula
Easy ![]()
[ 02:30h
:: 3.0 miles :: 200 feet ]
MidPeninsula Regional Open Sp…
Fri Jul 10 6:00 PM | Hiking
Pulgas Ridge Open Space Preserve
Redwood City | Peninsula
Challenging ![]()
[ 01:30h
:: 5.0 miles :: feet ]
MidPeninsula Regional Open Sp…
Sat Jul 11 1:00 PM | Hiking
Los Trancos Open Space Preserve
Skyline Blvd | Peninsula
Easy ![]()
[ 03:00h
:: 3.0 miles :: 250 feet ]
MidPeninsula Regional Open Sp…
Sat Jul 18 10:30 AM | Hiking
Picchetti Ranch Open Space Preserve
Cupertino | South Bay
Moderate ![]()
[ 04:30h
:: 4.0 miles :: 400 feet ]
MidPeninsula Regional Open Sp…
Sat Jul 18 10:30 AM | Walk
Don Edwards San Francisco Bay Natl Wildlife Refuge
Newark | East Bay
Easy ![]()
[ 01:30h
:: miles :: feet ]
Don Edwards SF Bay National W…
Sat Jul 18 6:00 PM | Walk
San Jose | South Bay
Easy ![]()
[ 04:00h
:: miles :: feet ]
Santa Clara County Parks and …
Sun Jul 26 9:00 AM | Hiking
San Jose | South Bay
Challenging ![]()
[ 03:30h
:: 5.6 miles :: 1400 feet ]
Santa Clara County Open Space…
Sun Aug 23 9:00 AM | Hiking
Rancho Caňada Del Oro Open Space Preserve
San Jose | South Bay
Moderate ![]()
[ 03:30h
:: 6.5 miles :: 600 feet ]
Santa Clara County Open Space…
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