Wooden stake and pyre?

For our 2023 new area and map, known as Oberlohwies, we have a similar request with an unusual wooden stake and pyre which we found. After a little bit of research, we found that it is in fact a manmade prop for an episode of the German-Austrian thriller series, Der Pass. Since the series is all about ritual murders, we have to assume that this is the scene of a ritual murder. It is located in a fantastic rock labyrinth and would make the perfect control site…..so the question is, what is the control description for a wooden stake and pyre and how would that be shown as a pictograph?!?! And is there a special map symbol other that an X?

We look forward to your suggestions!