A menhir (/ˈmɛnhɪər/;[1] from Brittonic languages: maen or men, "stone" and hir or hîr, "long"[2]), standing stone, orthostat, or lith is a large upright stone, emplaced in the ground by humans, typically dating from the European middle Bronze Age. They can be found individually as monoliths, or as part of a group of similar stones. Menhirs' size can vary considerably, but they often taper toward the top.
Menhirs are found across Europe, Africa, and Asia, with a concentration in Western Europe, notably in Ireland, Great Britain, and Brittany. Theories concerning their purpose remain speculative, with hypotheses ranging from druidic rituals to territorial markers or elements of an ideological system. Some menhirs feature engravings, including anthropomorphic figures and symbols, and are often associated with ancient religious ceremonies and burial chambers.