For 10 points, identify this type of location, in which one can find hardened vegetation.
Areas that only meet some of the requirements of this classification include the life forms at Alex Heiberg Island, which are often compared to a mummy. The largest example of this type of entity in the world can be found in the towns of Eressos and Antissa on the island of Lesbos. In the U.S., a national park named after one of these features contains the Monitor Butte of the Chinle Formation. That national park named after this type of place can be found on Navajo Land in Arizona. Broadly speaking, these regions are created after vegetation has undergone permineralization. For 10 points, identify this type of location, in which one can find hardened vegetation.
Areas that only meet some of the requirements of this classification include the life forms at Alex Heiberg Island, which are often compared to a mummy.
petrified forests [accept any reasonable equivalents, such as petrified woods, or places where you can find stone wood, accept fossil forests, or equivalents. DO NOT ACCEPT OR PROMPT on forests]