Unknown white fungus high on tree

Unknown white fungus high on tree

Observation - Unknown white fungus high on tree - UK and Ireland. Description: This fungus was found quite high up in a tree that was on the edge of waterfall section of the river going into Loch Arkaig.

This fungus was found quite high up in a tree that was on the edge of waterfall section of the river going into Loch Arkaig.