Carrock

A large and tall mid-river monolith in the upper reaches of the Anduin, to the north of the Old Ford. In Chapter 7 of The Hobbit, Gandalf states that the steps from the base of the rock to the flat space at the top were made by Beorn and that "Carrock" is Beorn's name for it. This is somewhat of a linguistic joke on Tolkien's part, since car in Anglo-Saxon means "rock," the Irish for "rock" is "carraig", and the Welsh for rock is "Carreg." Specifically, "carrock" is Beorn's word for large rocks standing in the middle of rivers, and as this is the largest such rock in the river, he took to calling it "the" Carrock.