Balancing rock
A balancing rock, also called balanced rock or precarious boulder, is a naturally occurring geological formation featuring a large rock or boulder, sometimes of substantial size, resting on other rocks, bedrock, or on glacial till. Some formations known by this name only appear to be balancing, but are in fact firmly connected to a base rock by a pedestal or stem. No single scientific definition of the term exists, and it has been applied to a variety of rock features that fall into one of four general categories:
Zimbabwe
India
Australia
Myanmar
Canada
United States
Balanced Rocks, Marble Canyon, Arizona
Balanced rocks atop the Sphinx in Bisti Badlands, Northwest New Mexico
A pedestal rock, Chicken Corners trail, near Moab, Utah
Omak Lake Balancing Rock, Washington
Mexican Hat Rock, near Mexican Hat, Utah
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Wikipedia