Dug a pit near an apartment complex that I was intending to use to burn all of the zombie bodies. However it seems that the fire is not actually burning things to completion. In the fire is a plank, a bunch of corpses, and misc clothing that I don’t want. Yet when it finishes, the burnt plank and the corpses are still there. Some of the clothing burnt, but about a third of it is still there (mostly leather stuff). Seems like it should be burning everything, or at least finishing off the plank.
Edit: managed to get things burned by dismembering the corpses first, then burning the refuse, but still not sure why the corpses & plank did not burn.