Natural, he was possibly sacrificed, maybe murdered. Either way, an unpleasant time.

https://en.m.wikipedia.org/wiki/Tollund_Man

This is a great read, don’t be intimidated. It’s by one of the Time Team guys.

http://pure-oai.bham.ac.uk/ws/files/56693117/Chapman_et_al_Towards_an_archeaology_of_pain_Oxford_Journal_of_Archeaology_2019.pdf