Onyx Cave, Show cave in Carroll County, Arkansas, United States.
Onyx Cave is a limestone show cave in Carroll County, Arkansas, with multiple connected chambers and passages. Its walls and ceilings feature complex mineral formations and distinctive striped patterns in shades of orange and brown.
The cave was discovered in the 1930s during local exploration activities. Shortly after discovery, it opened to the public and became a popular regional destination.
The cave's name reflects the mineral deposits visible on its walls as visitors walk through the interconnected chambers. These natural patterns shaped how locals and tourists came to understand the site over time.
The cave maintains a constant temperature of around 57 degrees Fahrenheit throughout the year. Visitors should bring a light jacket regardless of the outdoor temperature.
The walls display striking orange and brown striped patterns created by natural mineral deposits. This coloring actually resembles the semi-precious stone from which the cave takes its name.
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