Fungi/Lichen? (NOT)

Fungi/Lichen? (NOT)

Observation - Fungi/Lichen? (NOT) - UK and Ireland. Description: White circle about a couple of millimetres thick, topped by a brown cap. About six or seven millimetres diameter. About thirty up one side (West) of a tree trunk. Will take a better pic next time I am passing. They look like lots of comic eyes seen on hu

White circle about a couple of millimetres thick, topped by a brown cap. About six or seven millimetres diameter. About thirty up one side (West) of a tree trunk. Will take a better pic next time I am passing.
They look like lots of comic eyes seen on humorous cards, all staring out from the tree trunk.