Onyx Cave

Onyx Cave may refer to several things in the United States:

• Onyx Cave (Arizona), a National Natural Landmark
• Onyx Cave (Arkansas), a small show cave
• Onyx Cave (Kentucky), a show cave
• Great Onyx Cave, Kentucky
  • Great Onyx Cave Entrance, Mammoth Cave, Kentucky, listed on the NRHP in Kentucky
• Crystal Onyx Cave, Kentucky
• Onyx Cave (Newburg, Missouri), listed on the NRHP in Missouri
• Onyx Mountain Caverns, Missouri

See also

• Cave onyx