When looking for Abrahams part of the world he called Mamre, we need to find a place that has large trees or at least the remnants of the Tall Trees that was described in the Bible. Mamre today is a place down in the Western Cape, not far from Cape Town. There has been stories of trees of very large stature, only to have been cut down after the arrival of expansionist and colonial powers, but surely there it is still possible to grow very large trees in these parts of South Africa, be it Boabab or Yellowwoods, or as they were called in the Bible, Terebinths (whatever actual species they might have been back then, Scripture uses Oak and Cypress...). Now Abraham pitched his tents at Mamre and stayed at the Cape of Comforts because he lacked nothing there. Then he built an altar (Genesis 13,18) and later on was guided by three angels (with SoNiNi among them) who came to eat with Abraham (Genesis 18,1-15) at the plains and Giant Trees of Mamre.
In Genesis 13,18 Abraham settled by the Giant Trees of Mamre. The Septuagint (the greek rendition of Scripture) seems to refer to a single Great Tree, and historian Josephus even gave it a name Ogyges (but that name has way more inferences to it perhaps even being a person rather than a tree). Now Mamre himself may have been an Amorite, a local chief after whom the Tree or Trees was named after. Close to Mamre was said to be Mount Hebron (Genesis 23,19 ; 25,27) and not far from there again would be Mount Hermon. There are also said to be caves around this area, namely the Caves of The Patriarchs. As we read in Genesis 14,13:
13 "... Now Abram was living near the great trees of Mamre the Amorite, a brother of Eshkol and Aner, all of whom were allied with Abram."