Six hundred years ago the forest that covered the hills was gradually being cleared for cattle farming - Stubbins in Old English means 'land covered in tree stumps' or 'a place from which many trees have been cleared'(credit to John Simpson of Helmshore, author of A History of Edenfield and District).
Whilst the men were busy chopping the trees down, the women were trying to look after the children and the animals and kept tripping over stumps and branches, no doubt exclaiming "Thes oaken cors do everemo assaye my paciaunce and occasioun muche grevaunce!" followed by various Middle English expletives - thus Stubbins became synonymous with banging your toes and the over years people warned "Goest thou not to Stubbins or ye mayst bang thy toe!" which in modern English translates "Don't go Stubbin' your toe!"
When you have recovered from learning these astonishing facts, you may like to find the cache, which is a butty box containing log book, writing implement and the usual swaps.