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Carlsbad Caverns NPS auf Twitter: „These walls are completely naturally occurring! They are called rimstone dams, and they form in the presence of water. Over time, structures like this can form that
Carlsbad Caverns National Park - When active, a rimstone dam holds water behind it. Water flowing over the top deposits more calcite, increasing the dam height. Some formations can have a much
The Virtual Cave: Rimstone
Rimstone - Wikipedia
Rimstone dam hi-res stock photography and images - Alamy