سنگ‌پهنه

Also known as boulder field, boulders chaos

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