Piptoporus betulinus, also known as birch sponge on rotten birch trunk. This trunk was rotten because of the fact that it was inhabited by a mushroom that destroyed the wood. But even such a devastating mushroom looks very beautiful.
Olympus PEN E-PL7 (manual lans Helios 44-2), iso-1600, 1/100
Olympus PEN E-PL7 (manual lans Helios 44-2), iso-1600, 1/60