[zinnanti]

"One question is whether there are any active oil fields that might have had injection and/or fracking."

- Nothing that I can see for miles and miles. The only oil drilling/mining activity that I know of took place many decades ago. I included that one picture of the old oil drilling pipe.

Further, there is no irrigation in the area. The nearest irrigation is at least a half a mile to the northeast where they keep the lawn watered at the ranger station.

By the way, I am putting the photos in the public domain. Feel free to distribute, publish, use, whatever.

When I went up there yesterday, I ran into a ranger. We chatted briefly. He said that he noticed some changes after the Napa 6.1. I don't know what that meant, or if he really meant anything at all.

If you need me to go back and double check on anything, let me know. I go hiking there all of the time.

Tony