What causes these ribs on a tree ?

What type of tree is it ?
 
It could be an abnormal growth response to a fungal infection like mistletoe, but that's just a guess - you need to get an arborist to take a look.
 
Has that tree been coppiced?
I was wondering if someone's been trimming off shoots to prevent knotholes in the trunks?
 
Sorry I never explained , this was spotted on a dog walk in the Wyre Forest so is not mine, I will next time I go ( if there are any leaves left) get a better photo.
 
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