The Oak of Mamre (also called the Oak of Sibta), at Khirbet es-Sibte (also as Ain Sibta), is a site venerated by some as the "Oak of Abraham", and distinct from the more ancient site of Mamre. It owes its name to an ancient tree, which seems to be dead but has a young sprig growing next to it, and stands on the grounds of the modern Russian Orthodox Monastery of the Holy Trinity.
The site is located two kilometres (1.2 miles) southwest of Mamre, historically near Hebron and now inside the city. Also called The Oak of Abraham, it is an ancient tree which, in one tradition, is said to mark the place where Abraham entertained the three angels or where Abraham pitched his tent.
This site is distinct and at a different location from the site considered as Mamre by Herod the Great, Josephus, Constantine the Great, early Church historians and Christian pilgrims all until the mid-12th century, such as Arculf and Abbot Daniel. That site is at a location called in Arabic Ramat al-Khalil (the older name used by archaeologists) and currently Bir al-Haram ar-Rameh, which is a few kilometres north of the site described in this article. After the mid-12th century, the tradition of the "Oak of Mamre" has migrated to one or several places along the road from Mamre to Hebron, such as the site from this article.
As written in a footnote from a 1895 publication of Arculf's pilgrimage report, "[t]he Oak or Terebinth of Abraham has been shown in two different sites. Arculf and many others (Jerome, Itin[erarium] Hierosol[ymitanum], Sozomen, Eucherius [possibly Eucherius of Lyon], Benjamin of Tudela, the Abbot Daniel,.... etc.) seem to point to the ruin of er Râmeh, near which is Beit el Khulil, or Abraham's House, with a fine spring well. This is still held by the Jews to be the Oak of Mamre. The Christians point to another site, Ballûtet Sebta, where there is a fine specimen of Sindian (Quercus Pseudococcifera)."Ballut is the Arabic word for oak.