<Li> Greece--Petrified Forest of Lesvos, at the western tip of the island of Lesbos, is possibly the largest of the petrified forests, covering an area of over 150 km2 and declared a National Monument in 1985 . Large, upright trunks complete with root systems can be found, as well as trunks up to 22 m in length . </Li> <Li> India--protected geological sites known for petrified wood are the National Fossil Wood Park, Tiruvakkarai (20 million year old fossils) and the Akal Wood Fossil Park (180 million year old fossils). Petrified wood has also been discovered in Dholavira in Kutch, Gujarat, dating back to 187 - 176 million years . </Li> <Li> Indonesia--petrified wood covers several area in Banten and also in some part of Mount Halimun Salak National Park . </Li> <Li> Israel--several examples of petrified wood occur in the HaMakhtesh HaGadol in the Negev desert . </Li>

How long it takes for wood to petrify