Errigal is a 751-metre mountain near Gweedore in County Donegal, Ireland. It is the tallest peak of the Derryveagh Mountains and the tallest peak in County Donegal. Errigal is also the most southern and the highest of the mountain chain called the "Seven Sisters" by locals. Wikipedia
looks like a screaming wall of cup fungi. I saw these yesterday on a side of a building and never heard of them before. Shari had pointed them out to me when we walked passed the building.