The views are remarkable... a 360 view of the Bay from the middle of it!

I took a detour from the trail to visit the immigration Center. At the top of the stairs on the North ridge trail, I made a left and went about a mile along the perimeter road to it's entrance. I read the signage around the harbor then did a self-guided tour of the barracks. (Bring cash for entry!) It was a good, visceral reminder of our problematic history with immigrants.

From the Immigration Center I continued for a short time on the perimeter road to a fire road on the right. I followed that yo the Ida Trail that was marked as "to Mt. Livermore". This was a mostly uphill, exposed stretch. A bit hot, but incomparable and unobstructed views of East Bay, Bay Bridge, Treasure Island, SF, and Golden Gate bridge. At the top, the trail met up with the sunset trail.

The sunset trail was mostly level and transitioned from grasses to oak and bay tree coverage. Once in the trees, it was a steady decline back to Ayala Cove.

I had time to read about the island's history and varied uses at the visitor center and a beer at the cafe before my ferry departure.

A great day to enjoy the Bay area and learn some new things about the area.