• Jasper Forest is magical in twilight, particularly the logs on stone pedestals

    Petrified Forest

    National Park Arizona

Geology Gallery

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NPS
 
There are two main geological layers in Petrified Forest National Park, the Mio/Pliocene Bidahochi Formation and the Late Triassic Chinle Formation. These formations are further separated into members,
 

Did You Know?

spiral petroglyph marks the summer solstice

Petroglyphs are sometimes calendars, marking events like the summer solstice with interactions between the glyph, the sun, and natural landscape features.