From Wikipedia - Reading time: 2 min
The Shuggling Stone or "Clochnabogaddy" is a 13-ton boulder that sits at the edge of the moorland road between the Lackagh Bridge and Glen village in County Donegal in Ireland.[1]
It is called the Shuggling Stone because it "shuggles" very easily.[1], referring to an Irish word meaning to rattle, shake or jiggle something. With the aid of a short stick, the boulder can be rocked or "shuggled" backwards and forwards.
The stone is a lump of glacial granite and was first recorded in 1834 by Lieutenant Lancey during the first Ordnance Survey of Ireland; he noted then that it could be rocked back and forth with one finger.[2]