The park covers an area of 7 hectares, and consists of two sections, a marine and a coastal section. In both sections, interesting petrified remains will intrigue the visitor. Numerous standing trunks with intact root systems and lower trunk parts have been found on the site.
In the Plaka Park, pines and a large variety of fruit bearing plants (angiosperms), which do not appear with such diversity in any other inland site, compose the vegetation of Lesvos 20 million years ago. More specifically, fossilized plants that correspond to modern pine (Pinoxylon and Pinus), laurel and cinnamon plants (Daphnogene polymorpha, Cinnamonum polymorphum, Laurinoxylon), cottonwood (Populoxylon), plane tree (Platanoxylon) and Palmae (Palmoxylon) were found. It is a different forest vegetation zone compared to the Petrified forest at the “Bali Alonia” site in which there is almost exclusively coniferous trees (sequoias and protopinaceae).
Important interventions for the protection of the petrified trunks were made by building protective walls and coverings. Today, 46 excavation sites are accessible to visitors. Most of the fossilized trunks are still standing in their original location.
Among the finds is the giant petrified trunk (No 1) with a circumference of 13.7 meters which, according to the international literature, is the largest standing fossilized trunk in the world. This tree belongs to the laurel family. An impressive root system at the lower end of the trunk proves that the trunk is in its original place of growth prior to fossilization.
In the marine area the visitor can also find an impressive lying trunk with a length of 14 meters.