USA - Arizona - Petrified Forest National Park (3)

Petrified Forest National Park.

Petrified wood is made of a dense quartz material that resists erosion. This dense quartz, along with small quantities of other substances, replaces the original wood of the log and creates the rainbow color seen within the petrified wood.

Sent by Jane from Arizona, USA.

My other two Petrified Forest National Park postcards are here and here.