Absolutely beautiful photographs, some of which I have ripped off for screen savers.
Have been to many of the locations you show. Next time you're at Ice House, look across Peavine Ridge Road just east of the Ice House store and you'll see a road which leads to the top of Big Hill. Big Hill is a fire observation tower facility and helitack base and it offers 360 degree views, including all the way over to Mt Diablo on a clear day to the west and the Crystal Range to the east. Well worth the little side trip.
Thanks for sharing these. Your photos skills, particularly your macro shots (butterfly, flowers, etc) and photo composition, are very impressive...you are a true ARTISTE and rider...