Photos of lose to an incredible variety of countryside - coast, coastal mountains, central valley foothills and the Sierra Nevada.
I have some photographs of hiking / bike-riding / skiing / mountaineering at the following sites.
Mostly Northern California Outdoors Photos 2010 and later
Mostly Northern California Outdoors Photos 2009 and earlier

I went on a mountaineering expedition to a remote part of northeastern Nepal (the Yangma Valley) in Fall 2010.
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 summited.
An account of the climb is at the American Alpine Club website: click here
I have posted many photos of the trip. I suggest look at in the following order:
Climbing photos: base camp and above
Trekking photos: the trek in to base camp
Additional photos: the trek out, bonus photos, video clips