What’s in this rock? Western CO

[sandhillhunter]

Saw this in this large sandstone boulder. Prehistoric? Petrified wood?

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[HairyScandinavian]

Looks like the rock's ear if the face is facing to the right.

 

[BBob]

Ammonite fossil

 

[Antares]

Concretion

 

[def90]

Mammoth balls

 

[TSAMP]

Dinosaur egg

 

[huntsman22]

petrified butt crack.... a big one.

 

[nobody]

petrified butt crack.... a big one.

Literally was about to post this, beat me to it dangit

 

[willtim]

Pretty cool looking.

 

[sierracharlie338]

Literally was about to post this, beat me to it dangit

 

[butcherboy]

Prehistoric Bigfoot sack. Post vasectomy.

 

[Will_m]

 

[HunterGatherer]

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