The Oak-Tree: The Ancients often: Buried Their Dead Under
Source: TTT
Genesis 35:8
Now Deborah, Rebekah’s nurse, died and was buried under the oak below Bethel. So Jacob named it Allon-bachuth.
1 Chronicles 10:12
all their men of valor set out and retrieved the bodies of Saul and his sons and brought them to Jabesh. And they buried their bones under the oak in Jabesh and fasted seven days.