Petrified Forest by Rob
On the Greek island of Lesvos we saw the amazing Petrified Forest. A petrified forest is when there are trees that have turned into rock. Twenty million years ago the vegetation was very different in that part of Lesvos then the present day. Most of the trees that were petrified were Sequoia trees, the same trees that are now found in Northern California. These trees were petrified by volcanic ash seeping into the wood. This movement happened when Lesvos was still part of the mainland. In the Petrified Forest the only things standing were the stumps. Most of the stumps we saw were in their original position.
Afterward we went to the museum where I learned much more about volcanoes. For example, volcanoes can erupt many different ways. Volcanoes are formed by hot molten rock from deep in the Earth, erupting from a crack.
Nowadays, volcanoes do not kill many people because scientific machines are able to warn us. Mount St. Helens erupted from its side but only 57 people were killed. My visit to the Petrified Forest was very educational.
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