How to Use "petroglyph" with Example Sentences

1. A petroglyph emerges the sands of the sahara in chad .
2. Newspaper rock recreation site offers a large petroglyph panel .
3. It resembles a petroglyph of some sort more than it resembles the " usual " crop circle design .
4. If a petroglyph can be found on cave walls , depicting spirals in the sky , then certainly a similar message would be passed down routinely in all cultures surviving a pole shift .