Willow Shield Mushroom Pluteus salicinus
This is an uncommon mushroom which contains (small amounts?) psychodelic compounds. However, it is said to be edible if cooked. We found it in a local nature reserve yesterday.
The crosseye stereo is best viewed when sitting right back in your chair.
Olympus EM-1, (aperture priority), Olympus 4/3 50mm f2 macro, 1/40 at 10 ISO 3200, hand-held.