Growth on main stem of the tree
No interactions present.
This is I believe just a deformity of the tree which has been caused by stress as a result of injury, virus or fungus.
Chris Brooks - www.dragonfly-images.co.uk
My Flickr site - www.flickr.com/photos/ceb1298
Lat/Lng: 53.5571, -2.3934
OS grid ref: SD740067