Cathleen O’GradyThe wrinkles on the face of “Tollund Man” are still visible, even though he died more than 2200 years ago. The mossy wetlands in Denmark that mummified his body are ideal for preserving organic matter, giving archaeologists an extraordinary window into our distant past.
But a recent excavation at a similarly boggy site in Sweden shows these perfect conditions are fragile, and when they break down, so, too, do the bodies, bones, and other organic remains that have been preserved for centuries.
The finding suggests a long-standing tenet of archaeology—avoiding excavation and leaving artifacts in the ground for long-term preservation—needs revisiting, at least for some wetland sites.Anecdotal evidence has long suggested the.