The orange rocky needdles

..what are those orange needles? I asked myself when I saw the very first photo through the viewfinder in Brice Canyon National Park. Quickly learned that those are leftovers from soft sandstone erosion being up and down frosted and rosted by extreme weather conditions for more than two hundred days a year. This cycle of freezing and thawing causes the rocks to crumble.
In addition, rain water has an acidic effect, so it dissolves limestone rocks. Both processes are responsible for the formation of rock formations common in this part of Utah. It is estimated that erosion runs at a rate of 60-130 cm per 100 years.
So hurry to watch this miracle, because the needles are dimising year after year.. [the below photos taken in April 2010]