Onyx Cave may refer to:
In the United States:
- Onyx Cave (Arizona), a National Natural Landmark
- Onyx Cave (Arkansas), a small 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
Famous quotes containing the word cave:
“What difference is there, do you think, between those in Plato’s cave who can only marvel at the shadows and images of various objects, provided they are content and don’t know what they miss, and the philosopher who has emerged from the cave and sees the real things?”
—Desiderius Erasmus (c. 1466–1536)