Here are some pics from Sunday's trip to Alum Rock Park.
The Mineral Springs Loop Trail parallels Penitencia Creek down below.
Some pools in Penitencia Creek have algae mats so thick, grass is beginning to grow.
Autumn leaves float in the creek.
A look downstream.
Autumn tendrils wave in the breeze.
The creek bed is full of fallen bigleaf maple and sycamore leaves.
Some rocks along the bank are embedded with fossil mollusks.
A look upstream.
It's a sycamore sky.