Wednesday, June 11, 2014

Yellowstone: Mammoth Hot Springs to Fishing Bridge



Protected petrified tree. 
There are fossil forests, with trees like this one, standing in remote parts of the park, created by volcanism and ash maybe a million years ago, when cell tissue was replaced with minerals. Much more recently a fossilized tree is revealed by erosion.

1 comment:

  1. The petrified tree's fascinating!

    Breathtaking views.