Giant polypore

Okay, I think I finally found the right id.

@Michelle: not a problem, I'm thankfull for every suggestion. @Vlad: you're right, the color seems not really fitting for sulphur polypore. I went back to that place to check again but the mushroom was gone. However, it revealed that there actually was a tree stump underneath.

Michelle, thanks for the hint. However, trametes grows on dead wood and are usually not so fleshy as this specimen was.