General Description: Like the Panoche Hills, the Tumey Hills were once part of a vast inland sea. If you look closely at the ground you will find evidence of the sea which once covered the Tumey Hills. The porous, light rocks at the east Tumey access are composed of diatoms, the tiny, bleached, shell-like skeletons of sea algae.
These annual grasslands are lovely in springtime, with beautiful wildflower displays. The federally protected San Joaquin kit fox, blunt-nosed leopard lizard, and giant kangaroo rat all make their homes in these hills, although they are rarely seen.
Visitor service improvements are now complete at the new day use facility, which features a parking area, a shade structure, picnic benches, a vault toilet, and a kiosk providing an interpretive panel, a map, and information about the area.