Napa's Skyline Wilderness, April 18
Lupine and goldfields on the Buckeye trail:

Iris:

Lupine, and a few baby blue eyes and poppies on the Rim Rock trail:

Scarlet Pimpernel, 3 colors - mostly Anagallis arvensis var. caerulea:

Mystery flower, on the Manzanita trail:

Sunflower (Helianthus gracilentus?) and Diogenes Lantern:

White form of Baby Blue Eyes, on the Lake Marie Road:

An unnatural looking cave: