They tend to form in vertical or near-vertical faces of rock.
They can be as little as 0.1 m to several metres in height, width, and depth, with arched-shaped entrances,concave walls, sometimes with overhanging hoods or visors, especially in case-hardened rocks (rocks with a surface made harder by the local mobilization and reprecipitation of minerals on its surface),and smooth and gently sloping, debris-strewn floors.
Some tafoni cut right through boulders or slabs of rock to form rounded shafts or windows.
The origins of tafoni are complex.
They tend to form in vertical or near-vertical faces of rock. They can be as little as 0.1 m to several metres in height, width, and depth, with arched-shaped entrances,concave walls, sometimes with overhanging hoods or visors, especially in case-hardened rocks (rocks with a surface made harder by the local mobilization and reprecipitation of minerals on its surface),and smooth and gently sloping, debris-strewn floors. Some tafoni cut right through boulders or slabs of rock to form rounded shafts or windows.The origins of tafoni are complex.
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