Gallery 1

Relief Map in Community Memorial Museum of Sutter County

The hillsides of the volcanic range are lined with rocks dating to the Cretaceous & Tertiary periods -- between 4 million & 1.8 million years ago, respectively.

The Buttes, which are said to have been formed during those times changed with California's landscape from an inland sea to the peaks seen today. Shark fossils & mastodon bones have been found here.

Rock Wall on Dean Ranch

South Butte (with towers) on the left & Twin Peaks next to it, & other un-named peaks