Rock formations

thumb|Niapiskau island, limestone monoliths, Gulf of St. Lawrence, [[Mingan Archipelago National Park Reserve, Canada]] thumb|Uluru, [[Northern Territory, Australia, is often referred to as the biggest monolith. While the surrounding rocks were eroded, the rock survived as sandstone strata making up the surviving Uluru 'monolith'.]] thumb|Monolithos, Greece|Monolithos fortress on [[Rhodes, Greece]] thumb|Landsat 7 image [[Brandberg Mountain, Namibia]] thumb|Pedra da Gávea|Gavea Rock, a monolith next to the sea, near [[Rio de Janeiro, Brazil]] A monolith is a geological feature consisting of a

thumb|This Balancing rock|balancing boulder, "[[Balanced Rock", stands in Garden of the Gods park in Colorado Springs, Colorado, United States.]] thumb|Boulder in British Columbia, Canada thumb|Kämmenkivi stone on the Pisa hill in Kuopio, Finland thumb|Balanced granite boulders at Hyderabad, India In geology, a boulder is a rock fragment with size greater than in diameter. Smaller pieces are called cobbles and pebbles. While a boulder may be small enough to move or roll manually, others are extremely massive. In common usage, a boulder is too large for a person to move. Smaller boulders are us

thumb|Outcrop of volcanic rock in Germany An outcrop or rocky outcrop is a visible exposure of bedrock or ancient superficial deposits on the surface of the Earth and other terrestrial planets.

thumb|upright=1.2|Uluru in [[Australia]]

tall, thin spire of rock that protrudes from the bottom of an arid drainage basin or badland

naturally occurring rock whose shape resembles a mushroom

deformational feature in structural geology

thumb|Felsenmeer in Lautertal-Reichenbach (Odenwald) thumb|Felsenmeer on the Kalmit in the [[Palatine Forest]] thumb|Boulder stream of the Kaser Steinstube near [[Triftern]] thumb|A photo of a single eastern white pine in the nearly barren Boulder Field, [[Hickory Run State Park, PA.]] thumb|Felsenmeer, painting by Egbert Schaap (1912). [[Rijksmuseum Amsterdam]] A blockfield (also spelt block field), felsenmeer, boulder field or stone field is a surface covered by boulder- or block-sized rocks usually associated with a history of volcanic activity, alpine and subpolar climates and periglaciati

thumb|upright=1.3|Tafoni at Salt Point State Park, [[Sonoma County, California.]]

large, free-standing rock outcrop that rises abruptly from the surrounding smooth and gentle slopes of a rounded hill summit or ridge crest

area of younger rock completely surrounded by older rocks

Šerák () is a mountain in the Hrubý Jeseník mountain range in the Czech Republic. It has an elevation of above sea level. It is located in the municipality of Ostružná, on the historic border of Moravia and Silesia.

naturally occurring precariously balanced rock

thumb|300px|The shoreline formations of Stolbovoy Island. Note the polygons on the lower left and the conical mounds along the seashore. Baydzharakh (; Yakut: Бадьараах, Baçaraakh) is a term based in the Yakut language, referring to a roughly cone-shaped natural rock formation. They are usually composed of siltstone, silty peat or loam.

mountain in Czech Republic

rock in walls of an area with geologic activity

thumb|Eolith from France. Once believed to be an early [[hammerstone, in 1905 Marcellin Boule debunked its man-made status]] A geofact (a portmanteau of geology and artifact) is a natural stone formation that is difficult to distinguish from a man-made artifact. Geofacts could be fluvially reworked and be misinterpreted as an artifact, especially when compared to Paleolithic artifacts.

Relatively flat rock surface that is subdivided into more or less regular shapes by fractures