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File:Gypsum needles are one of the most fragile cave formations. These strands of gypsum are often thinner than a human hair and will (73e70c78-c4f1-474f-9693-865350a67ca4).jpg

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Summary edit

English: Gypsum Beard
Photographer
English: NPS Photo
Title
English: Gypsum Beard
Description
English:

a cluster of white hair-like crystalline needles growing down in a beard shape

Gypsum needles are one of the most fragile cave formations. These strands of gypsum are often thinner than a human hair and will break if breathed on. They can grow up or down and sometimes create gypsum "beards."

  • Keywords: gypsum; gypsum needles; gypsum beard; cave formation; speleothem
Depicted place
English: Wind Cave National Park, Custer County, South Dakota
Date Taken on 27 December 2009
Accession number
73e70c78-c4f1-474f-9693-865350a67ca4
Source
English: NPGallery
Permission
(Reusing this file)
Public domain This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government, such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information.
NPS Unit Code
InfoField
WICA

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current02:13, 15 January 2022Thumbnail for version as of 02:13, 15 January 20222,026 × 3,000 (5.51 MB)BMacZeroBot (talk | contribs)Batch upload (Commons:Batch uploading/NPGallery)

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