NAR SH48NW2

Maen Chwyf is a large natural stone or boulder set on an outcrop. It is some 4.0m by 3.0m and is propped up by several small semi-recumbent stones.
Although at one time identified as a collapsed burial chamber or cromlech, this appears to be a natural feature, one of several boulder heaps in the vicinity.

Source: RCAHM Anglesey Inventory (1937), 52

John Wiles 04.09.07