These photos are of NORTHERN CALIFORNIA (coast, coastal mountains, central valley foothills and the Sierra Nevada)
and of OTHER COUNTRIES and include
hiking, bike-riding, skiing and mountaineering.

Some hikes close to Davis
Hike 2023: Coastal Hike: Point Reyes: Sky Trail and Bear Valley Loop
Hike 2023: Hike near Vacaville: Lagoon Valley

Some recent trips mostly in the Sierra Nevada
Hike 2023: Crown Point
Ski 2023 : Lake Tahoe: Heavenly, Kirkwood, Northstar
Hike 2022: Anderson Peak, Thunder Mountain, North Peak
Snowshoe 2022: Red Lake Peak and Stephens Peak
Snowshoe 2022: Mount Rose
Hike 2021: Mount Goode and Mount Dana
Hike 2021: Cloudripper and North Peak
Snowshoe 2020-21: Ralston Peak (twice) and Mount Houghton
Hike 2020: Freel Peak above Lake Tahoe
Hike 2020: Mount Davis and before that Little Lakes Valley
Hike 2020: Excelsior Mountain and before that Round Top
Snowahoe 2020: Mount Ralston via Echo Lakes
Ski 2019: Mount Lassen
Hike/Mountaineer 2019: Matterhorn Peak, Mount Agassiz, Mount Goode, Southfork Pass

Other U.S.
Ski 2024: Park City Utah

Australia_2023: Melbourne, Canberra, Sydney mostly outdoors
Ski Guthega 2022: Guthega resort and backcountry (Mount Twynam)
Short day hike 2022: Sydney day excursion including Spit Bridge to Manly Walk

In September 2018 I went to South Africa and Eswatini (Swaziland)
Photos: Mountain bike: South Africa and Eswatani 
Photos: Safari: South Africa and Eswatani 
Video (large: 15 minutes 1.1 GB): Mountain bike: video (including photos) 
Safari video (large: 15 minutes 1.7 GB): Safari: video (including photos) 

In June 2016 I hiked the JOHN MUIR TRAIL from Yosemite to Mount Whitney

For photos see:
Yosemite Valley to Mammoth Lakes
Mammoth Lakes to Whitney Portal

In September 2014 I went on a hiking and rock climbing trip to TANZANIA (Mount Meru and MOUNT KILIMANJARO)
and to Kenya (MOUNT KENYA). A brief summary is at:
click here
For photos see:
Wildlife: Momella Lakes Tanzania
Hiking: Mount Meru Tanzania
Hiking: Mount Kilimanjaro Tanzania (Western Breach Route)
Hiking: Mount Kenya (Chogoria and Sirimon Routes)
Climbing: Mount Kenya (Batian - North Face Standard Route), Point Peter, Point Dutton
Street Scenes: Kenya (Nairobi, Embu, Chogoria)

Various California 2012-2013
Rockclimb 2013: Cathedral Peak
Backcountry ski and snowcamp: Mount Ritter
Snowshoeing 2012: Near Donner Pass

In Fall 2010 I went on a Himalayan mountaineering expedition to a remote part of NORTHEASTERN NEPAL (the Yangma Valley)
The trek in to base camp was an adventure in itself.
We then attempted to climb an unclimbed 21,500 foot peak - two of our group summitted.
An account of the climb appeared in the New Zealand Alpine Journal 2011: click here
Another account is at the American Alpine Club website: click here
I have posted many photos of this Himalayan trip.
A few are at Best 75 Photos of Entire Trip
For more photos I suggest you look at in the following order:
Climbing photos: base camp and above
Trekking photos: the trek in to base camp
Trekking Photos: the trek out
We had a preparatory training trip in Australia
Blue Lake Australia: snowshoe and ice climb