Medieval pine trees found in Norway

Norwegian scientists were surprised recently to find that dendrochronological dating showed fallen pine trees they were studying as part of climate research had died in the 14th century. Resin secreted by the dying trees is responsible for the "mummification."

“Many of the trunks we dated turned out to have seeded in the early 1200s, and had lived for more than 100 years at the time of the Black Death around 1350,” says Terje Thun, an associate professor at the Norwegian University of Science and Technology’s (NTNU) Museum of Natural History and Archaeology. “That means that the dead wood has ‘survived’ in nature for more 800 years without breaking down.”