After lunch we headed to see the Petrified Forest National Park. It is not really a forest, that I thought was funny. It's origin goes back many years, something like 225 millions years ago.
In a nutshell, they say there was a big flood and all these trees got uprooted and washed down a river, the ended up being covered with water and sediment. Later the land rose up, water dried up, sediment eroded away and left these petrified trees laying on the ground.